1 Report Overview 1.1 Study Scope 1.2 Market Analysis by Type 1.2.1 Global Smart Shoe Market Size Growth Rate by Type: 2016 VS 2021 VS 2027 1.2.2 Step counting shoes 1.2.3 Positioning shoes 1.2.4 Navigation shoes 1.3 Market by Application 1.3.1 Global Smart Shoe Market Share by Application: 2016 VS 2021 VS 2027 1.3.2 Online Channel 1.3.3 Retail Stores 1.3.4 Departmental Stores 1.4 Study Objectives 1.5 Years Considered 2 Global Growth Trends 2.1 Global Smart Shoe Market Perspective (2016-2027) 2.2 Smart Shoe Growth Trends by Regions 2.2.1 Smart Shoe Market Size by Regions: 2016 VS 2021 VS 2027 2.2.2 Smart Shoe Historic Market Share by Regions (2016-2021) 2.2.3 Smart Shoe Forecasted Market Size by Regions (2022-2027) 2.3 Smart Shoe Industry Dynamic 2.3.1 Smart Shoe Market Trends 2.3.2 Smart Shoe Market Drivers 2.3.3 Smart Shoe Market Challenges 2.3.4 Smart Shoe Market Restraints 3 Competition Landscape by Key Players 3.1 Global Top Smart Shoe Players by Revenue 3.1.1 Global Top Smart Shoe Players by Revenue (2016-2021) 3.1.2 Global Smart Shoe Revenue Market Share by Players (2016-2021) 3.2 Global Smart Shoe Market Share by Company Type (Tier 1, Tier 2 and Tier 3) 3.3 Players Covered: Ranking by Smart Shoe Revenue 3.4 Global Smart Shoe Market Concentration Ratio 3.4.1 Global Smart Shoe Market Concentration Ratio (CR5 and HHI) 3.4.2 Global Top 10 and Top 5 Companies by Smart Shoe Revenue in 2020 3.5 Smart Shoe Key Players Head office and Area Served 3.6 Key Players Smart Shoe Product Solution and Service 3.7 Date of Enter into Smart Shoe Market 3.8 Mergers & Acquisitions, Expansion Plans 4 Smart Shoe Breakdown Data by Type 4.1 Global Smart Shoe Historic Market Size by Type (2016-2021) 4.2 Global Smart Shoe Forecasted Market Size by Type (2022-2027) 5 Smart Shoe Breakdown Data by Application 5.1 Global Smart Shoe Historic Market Size by Application (2016-2021) 5.2 Global Smart Shoe Forecasted Market Size by Application (2022-2027) 6 North America 6.1 North America Smart Shoe Market Size (2016-2027) 6.2 North America Smart Shoe Market Size by Type 6.2.1 North America Smart Shoe Market Size by Type (2016-2021) 6.2.2 North America Smart Shoe Market Size by Type (2022-2027) 6.2.3 North America Smart Shoe Market Size by Type (2016-2027) 6.3 North America Smart Shoe Market Size by Application 6.3.1 North America Smart Shoe Market Size by Application (2016-2021) 6.3.2 North America Smart Shoe Market Size by Application (2022-2027) 6.3.3 North America Smart Shoe Market Size by Application (2016-2027) 6.4 North America Smart Shoe Market Size by Country 6.4.1 North America Smart Shoe Market Size by Country (2016-2021) 6.4.2 North America Smart Shoe Market Size by Country (2022-2027) 6.4.3 United States 6.4.3 Canada 7 Europe 7.1 Europe Smart Shoe Market Size (2016-2027) 7.2 Europe Smart Shoe Market Size by Type 7.2.1 Europe Smart Shoe Market Size by Type (2016-2021) 7.2.2 Europe Smart Shoe Market Size by Type (2022-2027) 7.2.3 Europe Smart Shoe Market Size by Type (2016-2027) 7.3 Europe Smart Shoe Market Size by Application 7.3.1 Europe Smart Shoe Market Size by Application (2016-2021) 7.3.2 Europe Smart Shoe Market Size by Application (2022-2027) 7.3.3 Europe Smart Shoe Market Size by Application (2016-2027) 7.4 Europe Smart Shoe Market Size by Country 7.4.1 Europe Smart Shoe Market Size by Country (2016-2021) 7.4.2 Europe Smart Shoe Market Size by Country (2022-2027) 7.4.3 Germany 7.4.4 France 7.4.5 U.K. 7.4.6 Italy 7.4.7 Russia 7.4.8 Nordic 8 Asia-Pacific 8.1 Asia-Pacific Smart Shoe Market Size (2016-2027) 8.2 Asia-Pacific Smart Shoe Market Size by Type 8.2.1 Asia-Pacific Smart Shoe Market Size by Type (2016-2021) 8.2.2 Asia-Pacific Smart Shoe Market Size by Type (2022-2027) 8.2.3 Asia-Pacific Smart Shoe Market Size by Type (2016-2027) 8.3 Asia-Pacific Smart Shoe Market Size by Application 8.3.1 Asia-Pacific Smart Shoe Market Size by Application (2016-2021) 8.3.2 Asia-Pacific Smart Shoe Market Size by Application (2022-2027) 8.3.3 Asia-Pacific Smart Shoe Market Size by Application (2016-2027) 8.4 Asia-Pacific Smart Shoe Market Size by Region 8.4.1 Asia-Pacific Smart Shoe Market Size by Region (2016-2021) 8.4.2 Asia-Pacific Smart Shoe Market Size by Region (2022-2027) 8.4.3 China 8.4.4 Japan 8.4.5 South Korea 8.4.6 Southeast Asia 8.4.7 India 8.4.8 Australia 9 Latin America 9.1 Latin America Smart Shoe Market Size (2016-2027) 9.2 Latin America Smart Shoe Market Size by Type 9.2.1 Latin America Smart Shoe Market Size by Type (2016-2021) 9.2.2 Latin America Smart Shoe Market Size by Type (2022-2027) 9.2.3 Latin America Smart Shoe Market Size by Type (2016-2027) 9.3 Latin America Smart Shoe Market Size by Application 9.3.1 Latin America Smart Shoe Market Size by Application (2016-2021) 9.3.2 Latin America Smart Shoe Market Size by Application (2022-2027) 9.3.3 Latin America Smart Shoe Market Size by Application (2016-2027) 9.4 Latin America Smart Shoe Market Size by Country 9.4.1 Latin America Smart Shoe Market Size by Country (2016-2021) 9.4.2 Latin America Smart Shoe Market Size by Country (2022-2027) 9.4.3 Mexico 9.4.4 Brazil 10 Middle East & Africa 10.1 Middle East & Africa Smart Shoe Market Size (2016-2027) 10.2 Middle East & Africa Smart Shoe Market Size by Type 10.2.1 Middle East & Africa Smart Shoe Market Size by Type (2016-2021) 10.2.2 Middle East & Africa Smart Shoe Market Size by Type (2022-2027) 10.2.3 Middle East & Africa Smart Shoe Market Size by Type (2016-2027) 10.3 Middle East & Africa Smart Shoe Market Size by Application 10.3.1 Middle East & Africa Smart Shoe Market Size by Application (2016-2021) 10.3.2 Middle East & Africa Smart Shoe Market Size by Application (2022-2027) 10.3.3 Middle East & Africa Smart Shoe Market Size by Application (2016-2027) 10.4 Middle East & Africa Smart Shoe Market Size by Country 10.4.1 Middle East & Africa Smart Shoe Market Size by Country (2016-2021) 10.4.2 Middle East & Africa Smart Shoe Market Size by Country (2022-2027) 10.4.3 Turkey 10.4.4 Saudi Arabia 10.4.5 UAE 11 Key Players Profiles 11.1 Li Ning 11.1.1 Li Ning Company Details 11.1.2 Li Ning Business Overview 11.1.3 Li Ning Smart Shoe Introduction 11.1.4 Li Ning Revenue in Smart Shoe Business (2016-2021) 11.1.5 Li Ning Recent Development 11.2 Nike 11.2.1 Nike Company Details 11.2.2 Nike Business Overview 11.2.3 Nike Smart Shoe Introduction 11.2.4 Nike Revenue in Smart Shoe Business (2016-2021) 11.2.5 Nike Recent Development 11.3 Salted Venture 11.3.1 Salted Venture Company Details 11.3.2 Salted Venture Business Overview 11.3.3 Salted Venture Smart Shoe Introduction 11.3.4 Salted Venture Revenue in Smart Shoe Business (2016-2021) 11.3.5 Salted Venture Recent Development 11.4 Retisense 11.4.1 Retisense Company Details 11.4.2 Retisense Business Overview 11.4.3 Retisense Smart Shoe Introduction 11.4.4 Retisense Revenue in Smart Shoe Business (2016-2021) 11.4.5 Retisense Recent Development 11.5 Under Armour 11.5.1 Under Armour Company Details 11.5.2 Under Armour Business Overview 11.5.3 Under Armour Smart Shoe Introduction 11.5.4 Under Armour Revenue in Smart Shoe Business (2016-2021) 11.5.5 Under Armour Recent Development 11.6 Digitsole 11.6.1 Digitsole Company Details 11.6.2 Digitsole Business Overview 11.6.3 Digitsole Smart Shoe Introduction 11.6.4 Digitsole Revenue in Smart Shoe Business (2016-2021) 11.6.5 Digitsole Recent Development 11.7 Boltt 11.7.1 Boltt Company Details 11.7.2 Boltt Business Overview 11.7.3 Boltt Smart Shoe Introduction 11.7.4 Boltt Revenue in Smart Shoe Business (2016-2021) 11.7.5 Boltt Recent Development 11.8 Adidas 11.8.1 Adidas Company Details 11.8.2 Adidas Business Overview 11.8.3 Adidas Smart Shoe Introduction 11.8.4 Adidas Revenue in Smart Shoe Business (2016-2021) 11.8.5 Adidas Recent Development 11.9 Solepower 11.9.1 Solepower Company Details 11.9.2 Solepower Business Overview 11.9.3 Solepower Smart Shoe Introduction 11.9.4 Solepower Revenue in Smart Shoe Business (2016-2021) 11.9.5 Solepower Recent Development 11.10 Orphe 11.10.1 Orphe Company Details 11.10.2 Orphe Business Overview 11.10.3 Orphe Smart Shoe Introduction 11.10.4 Orphe Revenue in Smart Shoe Business (2016-2021) 11.10.5 Orphe Recent Development 11.11 361 sport 11.11.1 361 sport Company Details 11.11.2 361 sport Business Overview 11.11.3 361 sport Smart Shoe Introduction 11.11.4 361 sport Revenue in Smart Shoe Business (2016-2021) 11.11.5 361 sport Recent Development 12 Analyst's Viewpoints/Conclusions 13 Appendix 13.1 Research Methodology 13.1.1 Methodology/Research Approach 13.1.2 Data Source 13.2 Disclaimer 13.3 Author Details

List of Tables Table 1. Global Smart Shoe Market Size Growth Rate by Type (US$ Million):2016 VS 2021 VS 2027 Table 2. Key Players of Step counting shoes Table 3. Key Players of Positioning shoes Table 4. Key Players of Navigation shoes Table 5. Global Smart Shoe Market Size Growth by Application (US$ Million): 2016 VS 2021 VS 2027 Table 6. Global Smart Shoe Market Size by Regions (US$ Million): 2016 VS 2021 VS 2027 Table 7. Global Smart Shoe Market Size by Regions (2016-2021) & (US$ Million) Table 8. Global Smart Shoe Market Share by Regions (2016-2021) Table 9. Global Smart Shoe Forecasted Market Size by Regions (2022-2027) & (US$ Million) Table 10. Global Smart Shoe Market Share by Regions (2022-2027) Table 11. Smart Shoe Market Trends Table 12. Smart Shoe Market Drivers Table 13. Smart Shoe Market Challenges Table 14. Smart Shoe Market Restraints Table 15. Global Smart Shoe Revenue by Players (2016-2021) & (US$ Million) Table 16. Global Smart Shoe Market Share by Players (2016-2021) Table 17. Global Top Smart Shoe Players by Company Type (Tier 1, Tier 2 and Tier 3) (based on the Revenue in Smart Shoe as of 2020) Table 18. Ranking of Global Top Smart Shoe Companies by Revenue (US$ Million) in 2020 Table 19. Global 5 Largest Players Market Share by Smart Shoe Revenue (CR5 and HHI) & (2016-2021) Table 20. Key Players Headquarters and Area Served Table 21. Key Players Smart Shoe Product Solution and Service Table 22. Date of Enter into Smart Shoe Market Table 23. Mergers & Acquisitions, Expansion Plans Table 24. Global Smart Shoe Market Size by Type (2016-2021) (US$ Million) Table 25. Global Smart Shoe Revenue Market Share by Type (2016-2021) Table 26. Global Smart Shoe Forecasted Market Size by Type (2022-2027) (US$ Million) Table 27. Global Smart Shoe Revenue Market Share by Type (2022-2027) & (US$ Million) Table 28. Global Smart Shoe Market Size Share by Application (2016-2021) & (US$ Million) Table 29. Global Smart Shoe Revenue Market Share by Application (2016-2021) Table 30. Global Smart Shoe Forecasted Market Size by Application (2022-2027) (US$ Million) Table 31. Global Smart Shoe Revenue Market Share by Application (2022-2027) & (US$ Million) Table 32. North America Smart Shoe Market Size by Type (2016-2021) (US$ Million) Table 33. North America Smart Shoe Market Size by Type (2022-2027) & (US$ Million) Table 34. North America Smart Shoe Market Size by Application (2016-2021) (US$ Million) Table 35. North America Smart Shoe Market Size by Application (2022-2027) & (US$ Million) Table 36. North America Smart Shoe Market Size by Country (2016-2021) & (US$ Million) Table 37. North America Smart Shoe Market Size by Country (2022-2027) & (US$ Million) Table 38. Europe Smart Shoe Market Size by Type (2016-2021) (US$ Million) Table 39. Europe Smart Shoe Market Size by Type (2022-2027) & (US$ Million) Table 40. Europe Smart Shoe Market Size by Application (2016-2021) (US$ Million) Table 41. Europe Smart Shoe Market Size by Application (2022-2027) & (US$ Million) Table 42. Europe Smart Shoe Market Size by Country (2016-2021) & (US$ Million) Table 43. Europe Smart Shoe Market Size by Country (2022-2027) & (US$ Million) Table 44. Asia-Pacific Smart Shoe Market Size by Type (2016-2021) (US$ Million) Table 45. Asia-Pacific Smart Shoe Market Size by Type (2022-2027) & (US$ Million) Table 46. Asia-Pacific Smart Shoe Market Size by Application (2016-2021) (US$ Million) Table 47. Asia-Pacific Smart Shoe Market Size by Application (2022-2027) & (US$ Million) Table 48. Asia-Pacific Smart Shoe Market Size by Region (2016-2021) & (US$ Million) Table 49. Asia-Pacific Smart Shoe Market Size by Region (2022-2027) & (US$ Million) Table 50. Latin America Smart Shoe Market Size by Type (2016-2021) (US$ Million) Table 51. Latin America Smart Shoe Market Size by Type (2022-2027) & (US$ Million) Table 52. Latin America Smart Shoe Market Size by Application (2016-2021) (US$ Million) Table 53. Latin America Smart Shoe Market Size by Application (2022-2027) & (US$ Million) Table 54. Latin America Smart Shoe Market Size by Country (2016-2021) & (US$ Million) Table 55. Latin America Smart Shoe Market Size by Country (2022-2027) & (US$ Million) Table 56. Middle East & Africa Smart Shoe Market Size by Type (2016-2021) (US$ Million) Table 57. Middle East & Africa Smart Shoe Market Size by Type (2022-2027) & (US$ Million) Table 58. Middle East & Africa Smart Shoe Market Size by Application (2016-2021) (US$ Million) Table 59. Middle East & Africa Smart Shoe Market Size by Application (2022-2027) & (US$ Million) Table 60. Middle East & Africa Smart Shoe Market Size by Country (2016-2021) & (US$ Million) Table 61. Middle East & Africa Smart Shoe Market Size by Country (2022-2027) & (US$ Million) Table 62. Li Ning Company Details Table 63. Li Ning Business Overview Table 64. Li Ning Smart Shoe Product Table 65. Li Ning Revenue in Smart Shoe Business (2016-2021) & (US$ Million) Table 66. Li Ning Recent Development Table 67. Nike Company Details Table 68. Nike Business Overview Table 69. Nike Smart Shoe Product Table 70. Nike Revenue in Smart Shoe Business (2016-2021) & (US$ Million) Table 71. Nike Recent Development Table 72. Salted Venture Company Details Table 73. Salted Venture Business Overview Table 74. Salted Venture Smart Shoe Product Table 75. Salted Venture Revenue in Smart Shoe Business (2016-2021) & (US$ Million) Table 76. Salted Venture Recent Development Table 77. Retisense Company Details Table 78. Retisense Business Overview Table 79. Retisense Smart Shoe Product Table 80. Retisense Revenue in Smart Shoe Business (2016-2021) & (US$ Million) Table 81. Retisense Recent Development Table 82. Under Armour Company Details Table 83. Under Armour Business Overview Table 84. Under Armour Smart Shoe Product Table 85. Under Armour Revenue in Smart Shoe Business (2016-2021) & (US$ Million) Table 86. Under Armour Recent Development Table 87. Digitsole Company Details Table 88. Digitsole Business Overview Table 89. Digitsole Smart Shoe Product Table 90. Digitsole Revenue in Smart Shoe Business (2016-2021) & (US$ Million) Table 91. Digitsole Recent Development Table 92. Boltt Company Details Table 93. Boltt Business Overview Table 94. Boltt Smart Shoe Product Table 95. Boltt Revenue in Smart Shoe Business (2016-2021) & (US$ Million) Table 96. Boltt Recent Development Table 97. Adidas Company Details Table 98. Adidas Business Overview Table 99. Adidas Revenue in Smart Shoe Business (2016-2021) & (US$ Million) Table 100. Adidas Recent Development Table 101. Solepower Company Details Table 102. Solepower Business Overview Table 103. Solepower Smart Shoe Product Table 104. Solepower Revenue in Smart Shoe Business (2016-2021) & (US$ Million) Table 105. Solepower Recent Development Table 106. Orphe Company Details Table 107. Orphe Business Overview Table 108. Orphe Smart Shoe Product Table 109. Orphe Revenue in Smart Shoe Business (2016-2021) & (US$ Million) Table 110. Orphe Recent Development Table 111. 361 sport Company Details Table 112. 361 sport Business Overview Table 113. 361 sport Smart Shoe Product Table 114. 361 sport Revenue in Smart Shoe Business (2016-2021) & (US$ Million) Table 115. 361 sport Recent Development Table 116. Research Programs/Design for This Report Table 117. Key Data Information from Secondary Sources Table 118. Key Data Information from Primary Sources List of Figures Figure 1. Global Smart Shoe Market Share by Type: 2020 VS 2027 Figure 2. Step counting shoes Features Figure 3. Positioning shoes Features Figure 4. Navigation shoes Features Figure 5. Global Smart Shoe Market Share by Application: 2020 VS 2027 Figure 6. Online Channel Case Studies Figure 7. Retail Stores Case Studies Figure 8. Departmental Stores Case Studies Figure 9. Smart Shoe Report Years Considered Figure 10. Global Smart Shoe Market Size (US$ Million), Year-over-Year: 2016-2027 Figure 11. Global Smart Shoe Market Size (US$ Million), 2016 VS 2021 VS 2027 Figure 12. Global Smart Shoe Market Share by Regions: 2020 VS 2027 Figure 13. Global Smart Shoe Market Share by Regions (2022-2027) Figure 14. Global Smart Shoe Market Share by Players in 2020 Figure 15. Global Top Smart Shoe Players by Company Type (Tier 1, Tier 2 and Tier 3) (based on the Revenue in Smart Shoe as of 2020 Figure 16. The Top 10 and 5 Players Market Share by Smart Shoe Revenue in 2020 Figure 17. Global Smart Shoe Revenue Market Share by Type (2016-2021) Figure 18. Global Smart Shoe Revenue Market Share by Type (2022-2027) Figure 19. North America Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 20. North America Smart Shoe Market Share by Type (2016-2027) Figure 21. North America Smart Shoe Market Share by Application (2016-2027) Figure 22. North America Smart Shoe Market Share by Country (2016-2027) Figure 23. United States Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 24. Canada Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 25. Europe Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 26. Europe Smart Shoe Market Share by Type (2016-2027) Figure 27. Europe Smart Shoe Market Share by Application (2016-2027) Figure 28. Europe Smart Shoe Market Share by Country (2016-2027) Figure 29. Germany Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 30. France Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 31. U.K. Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 32. Italy Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 33. Russia Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 34. Nordic Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 35. Asia-Pacific Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 36. Asia-Pacific Smart Shoe Market Share by Type (2016-2027) Figure 37. Asia-Pacific Smart Shoe Market Share by Application (2016-2027) Figure 38. Asia-Pacific Smart Shoe Market Share by Region (2016-2027) Figure 39. China Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 40. Japan Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 41. South Korea Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 42. Southeast Asia Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 43. India Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 44. Australia Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 45. Latin America Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 46. Latin America Smart Shoe Market Share by Type (2016-2027) Figure 47. Latin America Smart Shoe Market Share by Application (2016-2027) Figure 48. Latin America Smart Shoe Market Share by Country (2016-2027) Figure 49. Mexico Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 50. Brazil Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 51. Middle East & Africa Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 52. Middle East & Africa Smart Shoe Market Share by Type (2016-2027) Figure 53. Middle East & Africa Smart Shoe Market Share by Application (2016-2027) Figure 54. Middle East & Africa Smart Shoe Market Share by Country (2016-2027) Figure 55. Turkey Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 56. Saudi Arabia Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 57. UAE Smart Shoe Market Size YoY Growth (2016-2027) & (US$ Million) Figure 58. Li Ning Revenue Growth Rate in Smart Shoe Business (2016-2021) Figure 59. Nike Revenue Growth Rate in Smart Shoe Business (2016-2021) Figure 60. Salted Venture Revenue Growth Rate in Smart Shoe Business (2016-2021) Figure 61. Retisense Revenue Growth Rate in Smart Shoe Business (2016-2021) Figure 62. Under Armour Revenue Growth Rate in Smart Shoe Business (2016-2021) Figure 63. Digitsole Revenue Growth Rate in Smart Shoe Business (2016-2021) Figure 64. Boltt Revenue Growth Rate in Smart Shoe Business (2016-2021) Figure 65. Adidas Revenue Growth Rate in Smart Shoe Business (2016-2021) Figure 66. Solepower Revenue Growth Rate in Smart Shoe Business (2016-2021) Figure 67. Orphe Revenue Growth Rate in Smart Shoe Business (2016-2021) Figure 68. 361 sport Revenue Growth Rate in Smart Shoe Business (2016-2021) Figure 69. Bottom-up and Top-down Approaches for This Report Figure 70. Data Triangulation Figure 71. Key Executives Interviewed

Li Ning Nike Salted Venture Retisense Under Armour Digitsole Boltt Adidas Solepower Orphe 361 sport