Snail Shop 6" Dome Port for the Gopro Hero4/3+/3 and Dome Port Transparent Cover --- Accessories Available for the Gopro Specifically designed for GoPro underwater photography to provide superior optical performance Made of high grade Acrylic material Install a waterproof shell and floating handheld with the camera, no other accessories needed Dimensions 6" x 6" x 4",Product Weight:0.87lb