The Diving Tank Back Pack is designed to a backpack that it is easy to carry with under waterThese straps of Scuba Tank Holder can be adjusted that it can be bundled with different specifications of gas cylinder, so it is very convenient for usingThe Diving Tank Backpack includes shoulder straps and waist straps. Practical and can be widely used in diving, underwater productionOur Oxygen Bottle Holder is made of nylon and plastic, that it is sturable and light weight which can make you more flexible when divingThis Diving Tank Bracket has used anti-skid hold design, so that gas cylinder can be placed more stable and firmsize: 36 x 24cmMaterial: nylon+plasticcolour:blackPackage Contents:1 x Diving Tank BackpackOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.