Waterproof up to 100+ feet, the pouch is perfect for all kinds of water sports. It's also great at the pool, beach, campground, waterpark, and on cruises. It can be used in wintertime recreational activities or even just a rainy or snowy day. Not only does it keep moisture out of the pouch, but it also keeps particles such as sand and dust out as well. The lanyard is adjustable and can be worn around your neck or wrist or attached to an object. Pouch measures 7.2 in x 4.4 in.