[Fit & Cups]2 pack cup holder fit for 16-40 oz water bottles, with adjustable Buckle straps to to 4.3 inch diameter bottles, fit most drink and water bottles, including and cups. [Fit All Bogg Bags]Perfectly compatible with all Bogg bags and simply southern , will also fit similar rubber as well, designed with two straps connection snugly on the bag without falling off. [No More Shaking & Falling Off] drink holder with strong Buckle attaches more securely than other brittle button connectors that easily break off. No more worry about your drink spilling or lost. [Keep Your Tumbler Handy]Perfect water bottle accessories for keeping your tumbler and drinks easily accessible and secure storage without falling over in your to get everything wet. [Easy to Install]First please adjust the Buckle strap of the holder to fit your bottle, then just thread the strap through the hole and lock it to secure the cup holder to the bag. Including 2-pack bottle cages to stay hydrated for travel or share with your friends. There may be slight color difference or difference, the actual product shall prevail. color: Black Material: nylon Package Contents: 2* for Only the above package content, other products are not included. Note: Light reflection 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.