- Material and compatibility: The handle is made of high quality EVA, with the cylinder and stopper in high quality PC for solidity and rustproof performance in salt water. The adjustable strap is strong nylon and not easy to break. Fully compatible with Hero 1, Hero 2, Hero 3, Hero 3+, Hero 4, Hero 4, Hero 5, Hero 6, Session Edition, and Action Pro cameras. - Pocket size and portability: Portable and lightweight. The floating hand grip is 7 inches tall and weighs less than 80 grams, usable on land and in water. The length is 18.5 cm, easy to fit in a bag or backpack. - Hollow cylinder design: The waterproof storage compartment can hold small items such as cash or boat keys. It also provides neutral buoyancy during snorkeling and other underwater activities. - Textured handle and grip: The textured handler ensures a secure, non-slip grip, even in wet conditions. The cover makes it easy to hold the bobber, and the high-quality non-slip handle provides firm grip and comfort. The handle will not become sticky in sunlight like rubber handles.