This PopGrip has a swappable top — just close the grip flat, press down, and twist 90 degrees to swap out the top. Then, you can swap in a new PopTop or do a little wireless charging. Easily swap the top to change your style. PopPower - charging compatible. For generic wireless chargers, easily remove the top to wirelessly charge your phone. Offers a secure grip so you can text with one hand, snap better photos, and watch cat videos hands-free Functions as a convenient stand so you can watch videos on the fly. Repositionable and sticks to most devices and cases (but may not stick to silicone or waterproof cases). Allows for hands-free use with the PopMounts. Compatible with all mounts sold today. Dimensions: 39.74 mm diameter x 7 mm and 24.25 mm expanded. Sticks best to smooth hard plastic cases. Sticks to iPhone 11; will NOT stick to iPhone 11 Pro or iPhone 11 Pro Max without a suitable case.