Product Specifications: One Size Fits All - Elastic polyester fabric and Velcro fastener allows belt to fit nearly all shapes and sizes.   Holds Bottles Or Cans - Securely harnesses bottles or cans. Fastened so snugly you can do a cartwheel, jumping jacks, or go for a jog without losing your beverage (field tested).  Buckle Size - Each buckle measures 10" high and 12" wide.