Pearl Izumi's Elite Low Wool Socks are mid-weight 4-season socks that provide wool's excellent warmth and breathability, so you stay cool in the summer and warm in the winter. Anatomic compression panels support your arches and deliver a great fit. Plus, mesh panels on top keep you dry and warm mile after mile. - ELITE Transfer Merino wool yarns provide superior moisture transfer and insulation - Flat toe seam construction provides superior comfort over toes - Anatomic arch compression for a performance fit - Mesh ventilation over top of foot - Low cuff height