Waterproof protective case for an electronic device

A waterproof case can include a front portion with a cavity configured to receive a personal electronic device and a back portion configured to attach to the front portion to form the protective case. The back portion can include an overmolded gasket or a form-in-place gasket extending around a perimeter of the back portion. The front portion can include a mating surface extending around a perimeter of the cavity. The mating surface of the front portion can be configured to seal against a flexible sealing surface of the gasket when the back portion is attached to the front portion to provide a liquid-tight seal.