An absolute must for the GoPro. The doors are quickly routed times. Not always easy to find the size. The lens cover protects the lens and the Power perfect. Unintentional switching on the luggage is excluded. Fits only for the default case. For the immersion housing the other, 4-piece, Set is required. Good is also the lens cover, round, for use without a housing. Keeps bombproof and protects the lens effectively against damage. Only the price is a bit too high. GoPro are visiting his name.