The Akona Gobi Phone Dry Case is a floating phone dry bag with thumb print recognition. Keeps your phone protected while you enjoy your adventures. Great to use on the beach, boat or in a rain storm. Waterproof welded construction with radio frequency (RF) welded seams. Hand locking closure for a proper seal. Dry bag is made from thermoplastic urethane (TPU) and includes a wrist/neck lanyard. Bag measures (H x W) 8" x 4" (20.3cm x 10.2cm) and weighs 2 oz. (57 g) when empty. Phone bag is designed for the iPhone and is equipped with a durable TPU float rim that keeps your phone afloat.