The Gorilla Cage keeps bottles from ejecting from cages on bumpy roads with more gripping force than other carbon cages. NOTE: To ensure the best possible fit with the GORILLA Cage, use a bottle with a uniform groove all the way around and fits tightly into the hook at the top (bottles with short groves like the Camelback Podium, and with grooves that are not uniform around like the Polar Insulated bottles are not recommended for use with this cage) Six high shouldered carbon gripping fingers Tall retention tab at the top and and a stiff top lip helps to secure the bottle Fits onto any standard cage mount Flared entry for quick insertion Thick shelf to support large bottles Bottle Type: Standard Material: Carbon Access Style: Top Mount Type: Bolt-On Defined Color: Black-Red-White-