KEEN M KS86 Lea Birch
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KEEN's KS86 Lea is a men's shoe with a leather upper, part of the Spring 2026 collection. The leather material sets this model apart within KEEN's men's footwear lineup, pairing a natural upper with a shoe built for regular rotation.
- Men's leather shoe from KEEN's Spring 2026 collection
- KS86 Lea model with a full leather upper
- Designed and sized for men
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.
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| 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 |
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