The Transport Bottle Sling is designed to comfortably carry any Grayl® filter or purifier bottle or any 32-40oz water bottle. Dual cinch top closures keep your bottle secure while on the move. It's adjustable for left/right or front/back and it has multiple shoulder strap clip-in points to adjust the way your bottles lies on your back or front-side. It’s large full zip front pocket is designed to for a smartphone or other essentials. It has dual carry handles with top facing velcro to expand and attach G-Mods Accessory Pouches. Dual options also available for the removable shoulder strap.