Features: brand new and high quality Widely used on surfing, skiing, skateboarding, riding bicycle motorcycle. Shooting immersive videos and photos from the perspective of the chest becomes a breeze. Chest Strap for Go pro Accessories B Model Adjustable Chest for Body Harness Belt Strap. Used for wearing your Go pro camera on your chest. Adjustable elastic belt for comfortable fit. Specifications: Material:ABS and Metal Color:Black Size: Approx. 5.5-10 for cm/2.17-3.94 inches Note: 1.Please allow 0-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3.Other parts are not included. Thanks for your understanding. Package includes: 1 x Chest Strap 1 x J-HOOK Base 1 x Adapter 1 x Screw 1 x Phone Holder