Riding Accessories Kit by HOLACA, 360 Rotary Head Strap with Phone holder and Motorcycle Biking Arm Mount for Gopro Hero 2 3 3+ 4 4 Session 5 5Session and Mobile Phone Head strap is 360 super cool and the perfect accessory to allow for you to get some serious footage while on your bike Construction: Elastic straps, Steel Nut and plastic mount When it Mounted on top of the head, can multi-directional take pictures. hone holder (Extendable): 5cm to 10.5cm It can fit for two Gopro camera.