- You do not have any products in your shopping cart yet.
UYN Woman Biotrek Knee Socks - anthracite
(Product No.: UY-S100345-G000)
- COOL-AIR-FLOW TECHNOLOGY: 3D micro-channel structure for air circulation; keeps feet dry and at a comfortable temperature
- PRESHOCK SHIELD: Absorbs shocks and protects the sensitive Achilles tendon with a 3D knitted structure
- INTERICORANKLE GUARD: Asymmetrical ankle protection integrated into the shin. Reduces pressure during activity
- ANTI-IMPACTOR: Frontal shock-absorbing structure that also ensures efficient ventilation of the foot.
- ERGOLOGICAL FOOTBED: Anatomically shaped footbed for sports loads and movements.
- TARGET COMPRESSION BANDAGE: Double asymmetrical bandage with integrated transpiration. For localized compression exactly where it is needed.
- ZERO CUFF: Innovative ZEROCUFF structure that makes the traditional elastic band superfluous while maintaining the tightness of the sock. This improves blood circulation to the foot, improves performance and leaves no marks on the calf.
Find more products here
- PRESHOCK SHIELD: Absorbs shocks and protects the sensitive Achilles tendon with a 3D knitted structure
- INTERICORANKLE GUARD: Asymmetrical ankle protection integrated into the shin. Reduces pressure during activity
- ANTI-IMPACTOR: Frontal shock-absorbing structure that also ensures efficient ventilation of the foot.
- ERGOLOGICAL FOOTBED: Anatomically shaped footbed for sports loads and movements.
- TARGET COMPRESSION BANDAGE: Double asymmetrical bandage with integrated transpiration. For localized compression exactly where it is needed.
- ZERO CUFF: Innovative ZEROCUFF structure that makes the traditional elastic band superfluous while maintaining the tightness of the sock. This improves blood circulation to the foot, improves performance and leaves no marks on the calf.
Find more products here
UYN Size Chart
Fit-und-Warm carries UYN for Casual, MTB, Road Cycling, Running, Trekking and Winter Sports for women, men and children. Relevant products include base layers, T-shirts, jackets and socks. UYN uses strongly product- and activity-specific apparel fits.
Unisex / Men's Socks
| EU | Foot length (cm) | US Men | UK |
|---|---|---|---|
| 35–38 | 23–24 | 4–5.5 | 3–5 |
| 39–41 | 24.5–25.5 | 6.5–8 | 6–7.5 |
| 42–44 | 26–27 | 8.5–10 | 8–9.5 |
| 45–47 | 27.5–28.5 | 11–12.5 | 10.5–12 |
Women's Socks – On Models Labelled Accordingly
| EU | Foot length (cm) | US Women | UK |
|---|---|---|---|
| 35–36 | 22.5–23 | 4.5–5.5 | 3–3.5 |
| 37–38 | 23.5–24 | 6–7 | 4.5–5.5 |
| 39–40 | 24.5–25 | 7.5–8 | 6–6.5 |
| 41–42 | 25.5–26 | 9–10 | 7.5–8 |
Apparel
| Area | Current official size selection |
|---|---|
| Men's technical apparel | XS to XXL; some products use combined sizes |
| Women's technical apparel | 2XS to XXL; some products use XS/S, S/M, M/L, L/XL |
| Fits | Aerodynamic / Slim / Regular / Comfort |
UYN provides the concrete size chart directly with each product. Because base layer, cycling, running, trekking and winter products use different constructions and fits, no third-party universal body chart is added.
Assortment check: Fit-und-Warm UYN brand page. Manufacturer sources: official UYN apparel categories/fit information and product-specific UYN sock size charts. Research checked on 20 August 2026.