Climb fast and efficiently without damaging your feet. Features Be-Fresh with AIRCELL technology for better performance and fit. Be-Fresh is an anti-microbial fiber that offers complete freshness. AIRCELL technology is an impregnated polyester with a blend of Silver and 11 other minerals resulting in a unique fiber that is anti-microbial, deodorizing, and highly comfortable. Cuff line height for ankle protection. Densely knit asymmetric cushioning. Heel lock for no slip fit. Ideal for endurance sports of daily comfort. Ultra breathable mesh top. Consists of 42% nylon, 28% merino wool, 28% endurofil, 2% Lycra. Wash inside out with dark colors, tumble dry low. Available in a 3 pair pack.