Harness with chest mount The nylon elastic webbing used to make the chest mount harness is comfortable, breathable, and stable. You can easily change the length to fit the shape of your body with the multiple adjustment buckle. fits a variety of body shapes. With a premium PVC insert buckle for instant release, it's simple to put on and use. Mounting of the head strap This head strap mount is soft and comfortable because it is made of breathable and elastic material. The three soft, anti-slip rubbers inside can successfully stop you from falling off when you shake; To improve wearing comfort, a significant amount of sponge has been added to the head contact area. It comes in different sizes and can be worn on the head or on top of the helmet. Broad Compatibility: works with cell phones