Bridgedale Micro Fit Socks 51% Be-Fresh/ polypropylene/ 46% Nylon/ Polyamide / 3% Lycra/ elastane Imported This style gives the closest possible fit. Ideal for custom fitted boots. Super thin toe seam Moisture managing anit-microbial layer 54% Endurofil/polypropylene, 43% Nylon/polyamide, 3% Lycra/elastane