The Darn Tough Men's Thermolite RFL Over-the-Calf Ultra-Lightweight is designed with premier RFL next-to-skin fit and feel, and lightweight synthetic Thermolite. And as always, Darn Tough backs up its tough promise with an unconditional lifetime guarantee.

Features

• Cushion: no cushion
• Weight: ultra-lightweight
• Height: knee-high
• Thermolite is lightweight and insulating
• Performance fit for no slipping, bunching or blisters
• Fine gauge knitting for durability
• Fast action wicking
• Made in the USA
• Lifetime guarantee