Dosh Aero (or any of the Dosh products, to be honest). Pricey, but damn near indestructable, simple, waterproof, and flexible enough to sit on. Forces you to simplify your wallet, and comes in attractive, customizable color combinations.

Dosh Aero (or any of the Dosh products, to be honest). Pricey, but damn near indestructable, simple, waterproof, and…