Women's 84N Thick Padded Running Low-Cut Socks 72% Exclusive THOR-LON Acrylic , 19% Nylon, 7% Elastic, 2% Polyester Made in US Care instructions: For longer product life, maximum protection and comfort, wash and dry inside out (to fluff up the pads) using liquid fabric softener after each use (to lubricate the fibers for longer life). For optimal benefits, liquid fabric softeners are always recommended. Do Not Bleach. Wash Normal: 105F/40C. Dry Normal Medium. Do Not Dry Clean. Do Not Iron. -Constructed with THORLON blended with LYCRA freshFX fibers providing better moisture-wicking for drier, cooler feet and superior softness, resilience and durability -Contoured ventilated sock frame for less weight, moisture control and an aerodynamic fit for a more comfortable run. -Extra cushioning over the toes to help protect against runner's toe -Low profile toe seam won't rub or irritate the feet. -Lycra fiber in arch and instep for support and a no slip fit.