La Sportiva Adult Sizing
La Sportiva shoes are built on European half sizes, which are smaller increments than US half sizes — giving you a better fit with more size options.
| Men's US | European | Women's US |
|---|---|---|
| 2 | 33 | 2.5 |
| 2.5 | 33.5 | 3 |
| 2.5+ | 34 | 3.5 |
| 3 | 34.5 | 4 |
| 3.5 | 35 | 4.5 |
| 4 | 35.5 | 5 |
| 4.5 | 36 | 5.5 |
| 4.5+ | 36.5 | 5.5+ |
| 5 | 37 | 6 |
| 5.5 | 37.5 | 6.5 |
| 6 | 38 | 7 |
| 6.5 | 38.5 | 7.5 |
| 6.5+ | 39 | 7.5+ |
| 7 | 39.5 | 8 |
| 7.5 | 40 | 8.5 |
| 8 | 40.5 | 9 |
| 8.5 | 41 | 9.5 |
| 8.5+ | 41.5 | 9.5+ |
| 9 | 42 | 10 |
| 9.5 | 42.5 | 10.5 |
| 10 | 43 | 11 |
| 10.5 | 43.5 | 11.5 |
| 10.5+ | 44 | 11.5+ |
| 11 | 44.5 | 12 |
| 11.5 | 45 | 12.5 |
| 12 | 45.5 | 13 |
| 12.5 | 46 | 13.5 |
| 12.5+ | 46.5 | 13.5+ |
| 13 | 47 | 14 |
| 13.5 | 47.5 | — |
| 14 | 48 | — |
| 15 | 49 | — |
| 16 | 50 | — |
Climbing shoes are typically worn smaller than street shoes. For trad and moderate shoes, size down 1–2 sizes. For aggressive shoes and slippers, La Sportiva recommends sizing down 2–3 sizes from your street shoe size. Keep in mind that unlined shoes stretch about one full size with break-in; lined shoes stretch about half a size.
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How it works
The La Sportiva Katana Lace is a comfortable all-day climbing workhorse that punches well above its comfort level. Despite its downturn shape, it performs on slabs, twists into thin cracks, and excels on steep single and multi-pitch routes. The slightly downturned toe and subtle asymmetry let you hook into pockets and exploit the tiniest edges, while P3® technology and tubular construction maintain the shoe's profile and shape throughout its life. A veritable edging machine that you can actually wear all day.
Features
- Vibram® XS Edge™ outsole for maximum edging support while maintaining shape over extended use
- Revolutionary tubular construction with P3® system maintains toe box profile and shape throughout the life of the shoe
- 1.1mm full-length LaspoFlex midsole for sensitivity with support
- Slightly downturned toe with medium asymmetry for pockets, edges, and technical footwork
- Updated heel pattern with increased rubber coverage for improved grip while heel hooking
- Narrower heel sole design improves heel hooking precision
- Highly breathable tongue works with shoe lining for moisture management
- Constructed without intentionally added PFAS
- Resole-compatible via La Sportiva approved cobblers
Tech Specs
| Fit | Medium asymmetry, moderate downturn |
| Outsole | 4mm Vibram® XS Edge™ |
| Midsole | 1.1mm full-length LaspoFlex with P3® system |
| Upper | Microfiber and leather |
| Lining | Pacific (forefoot and back) |
| Construction | Slip lasted tubular |
| Sensitivity | 3/5 |
| Rigidity | 4/5 |
| Sizing | EU 34–46 (half sizes) |
| Weight | 8.8 oz / 250g |
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