BUDDY Red Reflective Wrist Band: SF-72711-Z02 : (Pack of 2 Pcs.) This band measures 11 inches long by 1 3/8 inches wide - adjustable to any wrist size Automatically fits your wrist! - "slap" onto wrist and it automatically forms to your shape Comfort lining inside for hours of comfortable wear - even good for children Great for night time safety as the red reflects light, like from a car or streetlight Good for jogging, hiking, camping, trick or treating, children, sports and more