1.Adjustable waist and shoulder straps, through adjusting the elastic rope and magic sticker to complete- One Size Fits Most, could adjust it for maximum comfort in fit. 2.Vest material is breathable, well-ventilated, and dries quickly keeping moisture to a minimum and allows for comfortable prolonged wear, durable, waterproof. 3.3 removable accessories pockets give you great storage capacity. 4.MOLLE(Modular Lightweight Load-carrying Equipment) external store system design, a kind of free assembly carrying style. 5.There are high quality protection board on the back and front side, both safe and comfortable.