We love our Leica Q, but we dislike the factory round cap that is difficult to use, takes up too much space, and is a magnet for scratches. So we designed this simple cap. It presses on and clicks into place. It stays secure and does not catch on anything. It takes up minimal space and is easy to store. And you can even drop it all you want and it won't scratch. Stores in a pocket or bag. Priced low enough to not cause grief if you lose it. We love it, we think you will too.