Saucony Endorphin Speed 5 'Boston' S21007-403
Experience the ultimate fusion of speed and style with the Saucony Endorphin Speed 5 ''Boston'' S21007-403, a cutting-edge running shoe designed for peak performance and inspired by the spirit of the Boston Marathon. Featuring advanced SPEEDROLL technology for effortless forward propulsion and an ultralight PWRRUN PB midsole for responsive cushioning, this shoe is built to improve your pace while keeping you comfortable during long runs. Its breathable mesh upper ensures optimal airflow, while the sleek Boston-themed design adds a touch of inspiration to your every step. Whether you''re a marathon competitor or a daily runner, the Saucony Endorphin Speed 5 delivers the perfect balance of support, durability, and speed-enhancing innovation to elevate your training or race day performance.
| US M | US W | UK | EU | CM |
|---|
| 3M | 4.5W | 2 | 35 | - |
| 3.5M | 5W | 2.5 | 35.5 | - |
| 4M | 5.5W | 3 | 36 | - |
| 4.5M | 6W | 3.5 | 37 | 22.5 |
| 5M | 6.5W | 4 | 37.5 | 23 |
| 5.5M | 7W | 4.5 | 38 | 23.5 |
| 6M | 7.5W | 5 | 38.5 | 24 |
| 6.5M | 8W | 5.5 | 39 | 24.5 |
| 7M | 8.5W | 6 | 40 | 25 |
| 7.5M | 9W | 6.5 | 40.5 | 25.5 |
| 8M | 9.5W | 7 | 41 | 26 |
| 8.5M | 10W | 7.5 | 42 | 26.5 |
| 9M | 10.5W | 8 | 42.5 | 27 |
| 9.5M | 11W | 8.5 | 43 | 27.5 |
| 10M | 11.5W | 9 | 44 | 28 |
| 10.5M | 12W | 9.5 | 44.5 | 28.5 |
| 11M | 12.5W | 10 | 45 | 29 |
| 11.5M | 13W | 10.5 | 46 | 29.5 |
| 12M | 13.5W | 11 | 46.5 | 30 |
| 12.5M | 14W | 11.5 | 47 | 30.5 |
| 13M | 14.5W | 12 | 48 | 31 |
| 14M | 15.5W | 13 | 49 | 32 |
| 15M | 16.5W | 14 | 50 | 33 |
| 16M | 17.5W | 15 | 51.5 | 34 |
Novelship employs a strict verification process where each product is unboxed to allow thorough inspection of the product, including the packaging, exterior appearance, interior components, and accessories. Defects and imperfections are flagged, and our authentication team determines the legitimacy of each product before final approval.
- Requests must be made within 30 days of the Shipment Completion Date (from your first contact).
- Products must be unused, in original condition, with the Novelship authentication tag attached.
- Buyers are responsible for return shipping fees.
- Return address will be provided after you agree to the return terms.
- Refund amount will be reviewed and finalized by our internal/finance team, and issued to the original payment method after verification.
Please speak to our Customer Service specialists before performing any such returns. Novelship reserves the final decision on whether a return is allowable.
Requests for size exchanges can only be made within 30 days of the shipping date and are subject to availability.
Please contact our customer service team before returning any product.
For further information, please refer to our Term and Conditions.
Experience the ultimate fusion of speed and style with the Saucony Endorphin Speed 5 ''Boston'' S21007-403, a cutting-edge running shoe designed for peak performance and inspired by the spirit of the Boston Marathon. Featuring advanced SPEEDROLL technology for effortless forward propulsion and an ultralight PWRRUN PB midsole for responsive cushioning, this shoe is built to improve your pace while keeping you comfortable during long runs. Its breathable mesh upper ensures optimal airflow, while the sleek Boston-themed design adds a touch of inspiration to your every step. Whether you''re a marathon competitor or a daily runner, the Saucony Endorphin Speed 5 delivers the perfect balance of support, durability, and speed-enhancing innovation to elevate your training or race day performance.
Novelship employs a strict verification process where each product is unboxed to allow thorough inspection of the product, including the packaging, exterior appearance, interior components, and accessories. Defects and imperfections are flagged, and our authentication team determines the legitimacy of each product before final approval.
- Requests must be made within 30 days of the Shipment Completion Date (from your first contact).
- Products must be unused, in original condition, with the Novelship authentication tag attached.
- Buyers are responsible for return shipping fees.
- Return address will be provided after you agree to the return terms.
- Refund amount will be reviewed and finalized by our internal/finance team, and issued to the original payment method after verification.
Please speak to our Customer Service specialists before performing any such returns. Novelship reserves the final decision on whether a return is allowable.
Requests for size exchanges can only be made within 30 days of the shipping date and are subject to availability.
Please contact our customer service team before returning any product.
For further information, please refer to our Term and Conditions.
