Please note: Dynafit has updated their sizing chart. Therefore, there are two size charts.
Shoes Dynafit - Trail series
Foot length (CM) | UK | EU | US Men | US Women |
22 | 3 | 35 | 4 | 5 |
22.5 | 3.5 | 36 | 4.5 | 5.5 |
23 | 4 | 36.5 | 5 | 6 |
23.5 | 4.5 | 37 | 5.5 | 6.5 |
24 | 5 | 38 | 6 | 7 |
24.5 | 5.5 | 38.5 | 6.5 | 7.5 |
25 | 6 | 39 | 7 | 8 |
25.5 | 6.5 | 40 | 7.5 | 8.5 |
26 | 7 | 40.5 | 8 | 9 |
26.5 | 7.5 | 41 | 8.5 | 9.5 |
27 | 8 | 42 | 9 | 10 |
27.5 | 8.5 | 42.5 | 9.5 | 10.5 |
28 | 9 | 43 | 10 | 11 |
28.5 | 9.5 | 44 | 10.5 | 11.5 |
29 | 10 | 44.5 | 11 | |
29.5 | 10.5 | 45 | 11.5 | |
30 | 11 | 46 | 12 | |
30.5 | 11.5 | 46.5 | 12.5 | |
31 | 12 | 47 | 13 | |
31.5 | 12.5 | 48 | 13.5 | |
32 | 13 | 48.5 | 14 |
Shoes Dynafit - Alpine and Ultra series

Dynafit trail poles

The Dynafit Borax PrimaLoft Mittens are ultralight, windproof, and insulating mittens that keep your hands warm in any weather. At just 80 grams, they're surprisingly light, yet thanks to their high-quality PrimaLoft® Gold insulation, they offer excellent warmth and protection—ideal for cold mountain days, ski trips, or winter trail adventures.
The Dynashell Ultralight material protects against wind and light precipitation, while the grip zones on the palm provide extra grip. The Borax Mittens pack down compactly, making them perfect as a backup pair in your backpack during cold or changing conditions.
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⭐ Key Benefits
- 🔥 PrimaLoft® Gold insulation – maximum warmth at ultra-light weight
- 💨 Windproof & water-repellent – Dynashell Ultralight protects against cold and moisture
- ⚖️ Ultralight (80 g) – easy to carry in your jacket or backpack
- ✋ Grip zones – improved control and durability
- 🧵 Comfortable fit – stretchy material with a smooth construction
- 🎿 Versatile use – ideal for ski touring, mountain sports and cold trail runs
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📊 Specifications
- Weight: 80 g
- Insulation: PrimaLoft® Gold 170 g BS
- Material: 80% polyamide, 11% polyester, 5% leather, 4% elastane
- Outer material: Dynashell Ultralight Fabric
- Properties: Windproof, water-repellent, insulating
- Extras: Grip zones on palm, compactly foldable
- Fit: Unisex
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🔹 Smart palm opening for extra ease of use
The Borax PrimaLoft Mittens have an overlapping opening in the palm, allowing you to quickly use your fingers without removing the mitten – ideal for grabbing something, using your phone, or adjusting your gear on cold days.
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🎯 Perfect for
Trail runners, ski tourers, and mountaineers looking for warm, windproof, and lightweight mittens for reliable protection against the cold and wind during winter adventures.