Snug fit with adjustable Velcro strap for extra support and a perfect fit. Delivers muscle support and warmth. Breathable neoprene construction. Easy to put on and take off. More economical than wrist tape. Hand washable ? let air dry S/M: For wrists with a 7.5” circumference and below (4.5” length x 3” top width x 2.25” bottom width) L/XL: For wrists with a 7.5” circumference and above (5.5” length x 4” top width x 3.25” bottom width)