The UST Watertight Case is great for storing small flat objects that you would like to keep dry such as credit cards, folded money, flash drives, etc. Not intended for submersion. 0.5 size perfect for creditcards, bills, 1.0 size holds keys, credit cards and other small items, 2.0 size is great for iPhone, Samsung Galaxyor both together. Keeps valuables safe and dry Holds keys, credit cards, and other small essentials Shatterproof polycarbonate case with o ring seals for impact and water resistance Material: Polycarbonate Size: 0.5 H 3.25 x W 3.25 x D 2.13 1.0 H 4.75 x W 3.75 x D 1.5 2.0 H 6.25 x W 4 x 1.5 x D 0.75 Weight: 0.5 1.2 oz. 1.0 2.2 oz. 2.0 oz 2.6 oz.