54% Q-SKIN®, 38% organic cotton, 8% elastane; Machine wash; Q-SKIN® is a breathable, moisture-wicking fiber infused with antimicrobial silver ions to keep feet dry, cool, and odor-free; Strategic terry cushioning adds impact protection, while arch compression ensures a locked-in fit from first serve to match point; Made in Italy; Revolve Style No. CESF-WA52; Manufacturer Style No. CSRSP005