Guaranteed Authentic Power Balance Wristband Made to last, this durable, 100% Surgical Grade Silicone wristband can go anywhere you do. Made with a stretch feature that extends easily over your hand, you"ll love the style and comfort it provides. Complete with two Power Balance holograms, this sporty and fun band goes with everything. Find your size and our secret weapon can be yours. XS (6.3 in or 16 cm) S (6.9 in or 17.5 cm) M (7.5 in or 19 cm) L (8.1 in or 20.5 cm) XL (8.7 in or 22 cm)