I used it once. Compatible with Nalgene 1L bottles. OneTigris military-style original design, bottle holder for outdoor activities, sports, and travel, made of durable nylon material, a cool outdoor product that is resistant to dirt and durable. ■ MOLLE system compatible. Using the MOLLE on the back, it can be attached to the webbing of your favorite messenger bag, backpack, or duffel bag. ■ The main body uses adhesive tape, so the size can be adjusted, and various bottles can be stored. ■ The strap at the bottom of the bottle holder also uses adhesive tape, so it can be adjusted and securely fixed. ■ The neck part has a rubber band, and please tighten it with the lock stopper according to the bottle shape. ■ A carabiner is also attached to the back, which can be attached to trouser belts, bags, or tactical vests, and is useful for carrying around when you are out and about.