Guaranteed Authentic Power Balance Wristband The Authentic MLB Team wristbands are official licensed product displaying your team"s favorite colors and logo. Designed especially for each team with custom colors, team logos and holograms, these Power Balance wristbands are for fans like you. Made to last, this durable, 100% surgical grade silicone wristband can go anywhere you do. 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)