Bridgedale Men's WoolFusion Trail Socks 40% Enduro Wool/ 35% Nylon/ 24% Endurofil/ 1% Lycra Imported ENDURO WOOL is the first spin of wool, which guarantees softness and quality compared to Merino Wool. Other wool yarns can be uncomfortable next to skin unlike Enduro-Wool. Enduro-Wool provides excellent thermal and moisture control properties. ENDUROFIL is a thermal yarn and is combined with Enduro-Wool and Merino Wool for superb wicking and durability. ENDUROFIL is a polypropylene fibre and offers high abrasion and wash resistance. LYCRA fibre is an elastic fibre that ensures Bridgedale socks fit and stay fitted. LYCRA is knit in specific zones to further improve fit and long term comfort and helps Bridgedale socks keep their shape year after year. BOOT HEIGHT and LIGHT CUSHIONING for added protection. 3 Year satisfaction guarantee. Imported. 40% Enduro Wool,35% Nylon, 24% Endurofil, 1% Lycra Double cuff crew Lightweight WoolFusion technology Single padding under foot 3 Year Guarantee