From Snorkeling to Sunsets... the Perfect Solution Polaroid Underwater Camera Housing is dive rated to protect your camera while providing full access to all key controls. Unlike "zip-lock"+ "snap" housings, these cases feature a unique 2 piece track-lock system that also enhances rigidity and protects the camera from bumps or impact. In addition, the lens portion is made of a unique optical-grade plastic composite which minimizes light drop off and ensures clear images. Land or sea, when it comes to protection without compromise it's the case to shoot for!