Merino Comfort Fusion Technology creates a soft, fast-drying, durable sock with a close supportive fit around your foot.… The super stretch ribbed cuff provides a looser unrestrictive fit around your calf allowing it to be worn up or down. The engineered zonal padding system provides extra support and comfort throughout the foot bed for long comfortable days in the hills. The Flat Toe Seam minimises bulk that could cause irritation in the toe box and the sock is kept securely in place with an Elasticated Arch and 3D-shaped heel cup. Built on a structure of Lycra® and set by our Thermo Fit process ensures the sock returns to its original shape and size after every wash.