PRODUCT DESCRIPTION: For athletes looking to relieve pain and prevent injury of calf/shin related conditions or trauma, the Incrediwear Calf Sleeve provides ergonomic support to reduce muscle fatigue and enhance performance. SIZING: Measure circumference of the calf. S/M L 12 - 16" 16 - 20" 30 - 41cm 41 - 51cm TECHNOLOGY AND SPECS: Incrediwear’s signature fabric blend is embedded with semiconductor elements to provide effortless comfort and exceptional durability Increases blood flow Accelerates recovery Relieves pain Reduces swelling Breathable and moisture wicking fabric Form-fitting fabric 3D weave design for strategic application Small/Medium: 63% Polyester 27% Nylon 10% Spandex Large: 74% Polyester 18% Nylon 8% Spandex APPLICATIONS AND USES:For best results, wear the Calf Sleeve to alleviate symptoms associated with: Muscle Fatigue Shin Splints Calf Cramps Muscle Soreness Wash and Care Instructions: The Incrediwear Calf Sleeve is easy to clean. Wash warm or cold, tumble dry low. Do not bleach, iron or dry clean.