Made from a custom high-performance fluoroelastomer, the Sport Band is durable and strong, yet surprisingly soft. The smooth, dense material drapes elegantly across your wrist and feels comfortable next to your skin. An innovative pin-and-tuck closure ensures a clean fit. S/M and M/L fits 140–210mm wrists. M/L and L/XL fits 160–245mm wrists. A portion of the proceeds from every (PRODUCT)RED purchase will go to the Global Fund to fight AIDS in Africa.