Reserve In-Store
Our fan-favorite returns with the legendary comfort and stability you’ve loved for years, now with more cushioning and an exciting new look. Ultrafly 5’s medial post and external TPU heel counter offer light pronation support for a stable and smooth run. We upped the stack height to 30 x 25 mm for 2 mm of additional cushioning. Our ZipFoam™ midsole delivers a lightweight and responsive ride, while our OrthoLite® Performance Insole provides a soft step-in feel. The recycled mesh upper provides a secure, comfortable, and breathable fit. (Ultra Fly)
Fitting Chart
Notes About Measuring Your Feet
Because they are flat, rulers can only approximate the size of your foot. Don't forget that manufacturers measure shoe sizes differently, and as a result, sizes may vary. When measuring your foot, ensure that you are standing and wearing the socks or stockings that will be worn with your new shoes when they arrive.
Still need help? Call us! 1-866-925-6880
If you have questions, Quark Shoes support is available Monday to Friday 8am to 9pm and weekends 8am to 4:30pm CST.
| US Sizes | Euro Sizes | UK Sizes | Inches | CM |
|---|---|---|---|---|
| 4 | 35 | 1 | 8.1875" | 20.8 |
| 4.5 | 35 | 1.5 | 8.375" | 21.3 |
| 5 | 35-36 | 2 | 8.5" | 21.6 |
| 5.5 | 36 | 2.5 | 8.75" | 22.2 |
| 6 | 36-37 | 3 | 8.875" | 22.5 |
| 6.5 | 37 | 3.5 | 9.0625" | 23 |
| 7 | 37-38 | 4 | 9.25" | 23.5 |
| 7.5 | 38 | 4.5 | 9.375" | 23.8 |
| 8 | 38-39 | 5 | 9.5" | 24.1 |
| 8.5 | 39 | 5.5 | 9.6875" | 24.6 |
| 9 | 39-40 | 6 | 9.875" | 25.1 |
| 9.5 | 40 | 6.5 | 10" | 25.4 |
| 10 | 40-41 | 7 | 10.1875" | 25.9 |
| 10.5 | 41 | 7.5 | 10.3125" | 26.2 |
| 11 | 41-42 | 8 | 10.5" | 26.7 |
| 11.5 | 42 | 8.5 | 10.6875" | 27.1 |
| 12 | 42-43 | 9 | 10.875" | 27.6 |
| US Sizes | Euro Sizes | UK Sizes | Inches | CM |
|---|---|---|---|---|
| 6 | 39 | 5 | 9.25" | 23.5 |
| 6.5 | 39 | 5.5 | 9.5" | 24.1 |
| 7 | 40 | 6 | 9.625" | 24.4 |
| 7.5 | 40-41 | 6.5 | 9.75" | 24.8 |
| 8 | 41 | 7 | 9.9375" | 25.4 |
| 8.5 | 41-42 | 7.5 | 10.125" | 25.7 |
| 9 | 42 | 8 | 10.25" | 26 |
| 9.5 | 42-43 | 8.5 | 10.4375" | 26.7 |
| 10 | 43 | 9 | 10.5625" | 27 |
| 10.5 | 43-44 | 9.5 | 10.75" | 27.3 |
| 11 | 44 | 10 | 10.9375" | 27.9 |
| 11.5 | 44-45 | 10.5 | 11.125" | 28.3 |
| 12 | 45 | 11 | 11.25" | 28.6 |
| 13 | 46 | 12 | 11.5625" | 29.4 |
| 14 | 47 | 13 | 11.875" | 30.2 |
| 15 | 48 | 14 | 12.1875" | 31 |
| 16 | 49 | 15 | 12.5" | 31.8 |
| US Sizes | Euro Sizes | UK Sizes | Inches | CM |
|---|---|---|---|---|
| 8 | 24 | 7 | 5.8 | 14.6 |
| 8.5 | 25 | 7.5 | 6 | 15.2 |
| 9 | 25 | 8 | 6.2 | 15.6 |
| 9.5 | 26 | 8.5 | 6.3 | 15.9 |
| 10 | 27 | 9 | 6.5 | 16.5 |
| 10.5 | 27 | 9.5 | 6.6 | 16.8 |
| 11 | 28 | 10 | 6.8 | 17.1 |
| 11.5 | 29 | 10.5 | 7 | 17.8 |
| 12 | 30 | 11 | 7.1 | 18.1 |
| US Sizes | Euro Sizes | UK Sizes | Inches | CM |
|---|---|---|---|---|
| 13 | 31 | 12 | 7.5 | 19.1 |
| 13.5 | 31 | 12.5 | 7.6 | 19.4 |
| 1 | 32 | 13 | 7.8 | 19.7 |
| 1.5 | 33 | 14 | 8 | 20.3 |
| 2 | 33 | 1 | 8.2 | 20.6 |
| 2.5 | 34 | 1.5 | 8.3 | 21 |
| 3 | 34 | 2 | 8.5 | 21.6 |
| 3.5 | 35 | 2.5 | 8.6 | 21.9 |
| 4 | 36 | 3 | 8.8 | 22.2 |
| 4.5 | 36 | 3.5 | 9 | 22.9 |
| 5 | 37 | 4 | 9.2 | 23.2 |
Reviews
-
5 Stars
Share Your Review
Sort By
Filter By
-
verified purchaserI recommend this product.