These TBCo socks with contrasting colour tipped edge are crafted from a luxurious blend of soft cashmere and insulating merino wool, with a dash of elastane so they retain their shape wear after wear. This fiber combination offers exceptional warmth without compromising breathability, a natural feature of wool that synthetic materials can't match, ensuring you stay comfortable even on the coldest days. Small - US 6-9 Large - US 10-13 64% Merino Wool, 28% Cashmere, 8% Elastane Hand Wash. Lay Flat to Dry Imported