Features Hardwearing mid-weight knee-length weatherproof socks from Sealskinz Nylon and elastane blend shell fabric - this tough layer works with a hydrophilic membrane to protect your foot from the elements whilst remaining highly breathable. Merino wool lining - promotes efficient moisture control to maximise comfort. Elasticated ankle and insteps - these support and cushion the foot when active. Knee-length shape Recommended activity - hiking / trekking / walking