The Uphill Sport Frost Trail Thermal Merino Blend Socks are designed for runners who need dependable comfort, warmth and breathability in colder conditions. Made with a fine merino wool blend, these lightweight thermal running socks help regulate temperature naturally while keeping your feet dry and comfortable on long trail runs, winter training sessions and everyday outdoor activities.
The advanced ventilation structure improves airflow and moisture release, helping to reduce overheating and discomfort during intense movement. Merino wool provides excellent insulation while remaining breathable, and it continues to keep your feet warm even in damp conditions. This makes the Frost Trail socks an ideal choice for trail running, hiking, walking and cold weather sports across the UK.
A supportive Y-heel construction helps the socks stay securely in place while you move, reducing slipping and improving overall fit. The lightweight design delivers a close, comfortable feel inside running shoes or trail footwear without unnecessary bulk. With ankle-length coverage and a thermal rating of 3, these merino wool running socks offer reliable warmth while maintaining flexibility and performance.
Perfect for runners and outdoor enthusiasts looking for high-quality thermal running socks, the Uphill Sport Frost Trail socks combine comfort, durability and natural merino performance for all-season wear.
