Features： [Multifunctional 6-in-1 Chest Strap Set] Includes 1* chest strap, 1 * J-hook, 1 * thumbscrew, 1 * adapter screw, 1 * phone clip, and 1 * silicone mat, suitable for mounting sports cameras and smartphones. [Wide Application] Freeing your hands, great for outdoor sports, extreme sports, and underwater photography, like cycling, running, climbing, diving, and more, providing first person view camera angle. [Adjustable Chest Strap] Made from premium polyester material, padded, elastic and breathable, suitable for a wide range of body types; quick release buckle design, easy and comfortable for wearing. [Extendable Phone Clip and silicone Mat] Adjustable length from 5.8/ 2.2inch to 8.8cm/ 3.4inch, compatible with most smartphones on the market; with silicone mat for fixing the phone more firmly, preventing accidental falling off. [Lightweight Design] Adding more comfort while not affecting it's performance, nice replacement for GoPro Hero10/9/8/7/6/5/4, Session, 3+/3/2/1, Fusion, DJI OSMO, etc. Specifications： Color: Black Material: Plastic and polyester Phone Clip Width: 5.8-8.8cm/ 2.2 * 3.4inch Silicone Mat Size: 11.4 * 5.8cm/ 4.4 * 2.2inch Chest Strap: 36 * 34cm/ 14.1 * 13.1inch Chest Strap Weight: 123g/ 4.3oz Note： The sports cameras and smartphones showed in the pictures are not included. Package List： 1 * Chest Strap 1 * J-Hook 1 * Thumbscrew 1 * Adapter Screw 1 * Phone Clip 1 * Silicone Mat