Up To 20% Off Full-Price Items
Shop now
EXTRA 20% Off Clearance
Shop now | Ends 11/9
Get An EXTRA $50 Cash Back*
Summit+ exclusive
RFL Thermolite OTC Ultra-Lightweight Sock
Size:
Quantity
Join Summit Club+ and
The RFL Thermolite OTC Ultra-Lightweight Sock keeps boots feeling locked in
What Our Gearhead® Experts Are Saying:
"I switched to the RFL Thermolite OTC Ultra-Lightweight Sock for a week of resort riding, and my boots felt more responsive right away, less bulk between my foot and the liner. My feet stayed comfortable from first chair to last, no hot spots and no slipping."
Every good day on the mountain starts at the bottom of the lift, buckling into boots that fit exactly right, and the RFL Thermolite OTC Ultra-Lightweight Sock from Darn Tough is built for that first step. Picture stepping into your bindings, foot locked in tight against the liner, boots responding the instant you tip into a turn instead of a beat behind.
Knit from lightweight synthetic Thermolite fibers, it stays low profile enough to preserve that direct boot connection while still trapping enough warmth to keep toes comfortable through a full day out. A True Seamless Toe removes friction points before they start, and a reinforced Achilles panel keeps the sock from sliding down inside the boot, run after run.
Details
- Ultra-lightweight over-the-calf sock for skiing and snowboarding
- Thermolite fibers stay warm without bulking up the fit
- True Seamless Toe removes pressure points inside boots
- Reinforced Achilles panel keeps socks from sliding down
- Low-profile knit preserves direct boot connection
- Item #DRNC04X
- Material
- 52% nylon, 43% Thermolite polyester, 5% lycra spandex
- Height
- over-the-calf
- Weight
- ultralight
- Cushion
- none
- Manufacturer Warranty
- limited lifetime
- Activity
- ski, snowboard
Related Categories
Frequently Asked Questions
How should I choose a size for the Darn Tough RFL Thermolite OTC Ultra-Lightweight Sock?
Choose by your shoe size using the sizing chart for this unisex sock, rather than by height or weight. The over-the-calf cut is designed to work with tall ski and snowboard boots.What conditions suit the Darn Tough RFL Thermolite OTC Ultra-Lightweight Sock?
Its breathable warmth and low-bulk fit suit skiing and snowboarding when you want a trim sock inside your boot. For deep cold or long periods in wet snow, a warmer, more cushioned sock may be a better choice.How does the Darn Tough RFL Thermolite OTC compare with a cushioned ski sock?
This ultra-lightweight sock prioritizes a close fit and minimal bulk over extra cushioning. It’s a useful choice when a snug boot fit matters more than plush padding.How should I wear the Darn Tough RFL Thermolite OTC in ski or snowboard boots?
Pull the sock smoothly over your calf and foot, then check that it lies flat before putting on your boot. Folds or bunching can create pressure points, especially in a close-fitting boot.How should I care for the Darn Tough RFL Thermolite OTC Ultra-Lightweight Sock?
Follow the sewn-in care label; turn the sock inside out for washing, avoid bleach and fabric softener, and use low heat or air-dry. Let it dry fully before storing.