The wristband size is 9.8'' x 1.69'' x 0.78'', Material: Silicone. Holds up to 15mL of liquid.The refill opening is wide enough to accomodate most product spouts. The matching sub-bottling capacity is 30m. Adults/ Kids Unisex - One Size Fits All (The band strap length is adjustable ). Ages 7 & Up - Use With Adult Supervision. Wash with soap, warm water and refill. Fill with your liquid of choice and press on the wristband's logo to dispense at your leisure.