The Hike Classic Edition Second Cut Crew Socks put Smartwool's 2nd Cut yarn to work, spinning recycled fiber together with virgin Merino wool into a sock that holds up to the same standard as a fully virgin-wool build. Light Cushion runs cushioning the full length of the footbed, without the bulk of a heavier hiking sock. The three pairs included are enough to keep a hiking rotation stocked between wash days. What Our Gearhead® Experts Are Saying:"The light cushion is ideal on days when my boots already run snug or the trail stays dry and moderate, not the deep miles that call for more padding underfoot. Less bulk keeps my foot from fighting the boot for room, and I still get all-day comfort without overheating once the sun's out."