This is a dedicated silicone case for the Sony WF-1000XM3. It has a hole at the bottom, so you can charge it via Type-C while the case is on. Made of non-slip silicone, it provides good flexibility and an excellent feel. The case is about 0.8mm thick. The size doesn't change much 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