The outer layer is made of cationic two-color material, which feels comfortable. It is splash-proof, scratch-resistant and durable, which better protects the headphones and is more suitable for outdoor use. ^^ The inner layer is made of suede imitation microfiber leather, which is fine and comfortable to touch. It is non-slip and absorbs water, so you can put your headphones in a bag even if you sweat after exercise. ^^ Small and portable, easy to travel. The small hanging ring on the bag can be hung on a backpack or handbag with a mountaineering entrance, so you can listen and take it at any time, and immerse yourself in the wonderful sound at any time.