This is a dedicated silicone case for the Sony WF-1000XM3. There is a hole at the bottom, so you can charge via Type-C with the case on. Made of non-slip silicone, it provides good flexibility and excellent feel. The case is about 0.8mm thick. The size hardly changes even when it's on. It comes with a metal carabiner, so you can hang it anywhere, such as on a backpack, and you don't have to worry about losing it. 【Specs】 Color: Black Included: Carabiner Impact resistant, drop prevention, split design, easy to put on and take off, loss prevention, full protection