From Manufacturer
The YELANGU B300 Vest and Stabilizing Arm is designed to distribute the weight of your handheld gimbal to your hips to prevent exhaustion when shooting for long hours in the field. It has a load capacity of 17.6 lb. The vest is lightweight and adjusts to all body types. The spring arm and plate can adjust up and down to achieve optimal height. The stabilizer's aluminum design and various adjustment knobs creates a durable and fixed structure. Operate your gimbal with just one hand when attached to the B300. Spin the arm downwards to adjust the shooting angle.