HEATTECH socks warm down to the toes! - Comfort features include self-deodorization, bio-warming, insulating, anti-microbial/anti-odor, and moisturizing. - Crew length socks in seasonal cable knit and diagonal plaid designs. SIZE To Fit Shoe Size AU: 4.5 - 7.5 MATERIAL Placement Design: 77% Acrylic, 16% Nylon, 5% Wool, 1% Spandex, 1% Polyester/ Checks: 48% Nylon, 45% Acrylic, 4% Wool, 2% Spandex, 1% Polyester CARE Machine Wash, Gentle Or Delicate