The orange Dri Cat Hang it Waterproof Case with Carabiner Leash for iPhone 4/4S from EK USA is a silicone and polycarbonate shell submersible to 18'. The case clamps shut and is sealed with an interior o-ring gasket. Make or receive calls while you're in the water or just listen to music. The removable carabiner is attached to nylon tab that has a quick-release buckle. It should be noted that you cannot use waterproof headphones while in the water since all the ports on the case are sealed.
In the Box
EK USA Dri Cat Hang it Waterproof Case with Carabiner Leash for iPhone 4/4S (Orange)
Limited 90-Day Warranty Against Manufacturer's Defects