When you mount your GoPro Hero 4 camera with BacPac accessories and still want it to be protected, this is the protective housing case you need. This waterproof housing case is made of premium plastics. The housing is sturdy, lightweight and fits perfectly on the camera with a premium look. It's designed to effectively protect your GoPro HERO4 (also compatible with HERO3 and HERO3+) above or below the water . It's tested to be waterproof up to 40 meters (131 feet) underwater . The housing case is sturdily built, can be mounted during diving and extreme activities. The flat lens is made of high quality glass that promises sharp images. We've included both the standard backdoor and BacPac backdoor in the package so that your camera can have essential protection with or without the BacPac accessories. Package Include: 1.Waterproof Housing with Standard Backdoor 2.BacPac Backdoor 3.Anti-rust Thumb Screw 4.Quick Release Buckle