Merino Fusion fabric - blends merino wool and Coolmax synthetic fibres for a moisture-wicking, naturally soft sockExtra height sock - ideal for boots with extended ankle cuffZonal padding systemMoisture-wickingFlat toe seam - minimised bulk and stops abrasionElasticated arch and 3D heel cup - keeps the sock firmly in placeThermo Fit Lycra construction - ensures the sock returns to shape after each washIdeal for long or multi-day hikes