The Braza Secret Stash attaches to your bra, swimwear and other under garments and is a safe and secure way to hide money, credit cards, jewelry and more. Pocket has a 3 inch hook and loop stretchable band for easy placement or adjustment. For the beach, when traveling, going to a club and for general convenience and security. Measurements: The pocket is 2 3/4\" wide x 4 1/4\" tall. Material: Nylon and Spandex