Darn Tough Unisex RFL Over-The-Calf Ultra-Light Snow Size:X-Large At the heel of the

At the heel of the boot is a plate insert that clicks into the heel unit when stepping in firmly with the foot

forget it’s on” feel

Best for - Everyday run

Weight per unit - 9 OZ

Full zip on both sides for boots-on layer changes

Darn Tough Unisex RFL Over-The-Calf Ultra-Light Snow Size:X-Large At the heel of the*Darn Tough says* Breathe easy. Bringing together smooth Merino Wool feel, next to skin fit, flex and fatigue zapping arch support, and targeted venting the ultra lightweight RFL is the sock experience your hard charging feet have been dying for, lap after lap. FEATURES Performance Fit: No slipping, no bunching, and no blisters. Fine Gauge Knitting: Unprecedented durability and our unique put it on, forget its on feel. Fast Action Wicking: Pulls