Install this self-adhesive adapter on the back of a third-party phone case to make almost any phone compatible with Peak Design Mobile mounts and accessories. With a thickness of only 2.5mm and a beautiful weatherproof nylon shell, the universal adapter is unobtrusive, aesthetically clean, and adheres with 3M VHB for an ultra-strong, ultra-durable connection. It adheres to smooth, non-textured, non-porous housing materials such as hard plastic and metal. Not recommended for soft or rubbery surfaces such as silicone or leather. Installation directly on the phone is not recommended. Wireless charging may not be possible or optimal with adapter installed.