XLAB Gorilla XT Water Bottle Cage Matte Black. The XLab Gorilla XT bottle cage prevents bottles launching under extreme conditions including mountain biking and rough road surfaces. Tall Gripping sides for approx 14lbs grip on bottleStiff top lip helps retain bottlesFlared entry for fast insertionThick shelf for large bottles TECH SPECSColor Matte BlackBottle Type StandardAccess Style TopMount Type Bolt-OnMaterial CarbonDefined Color Black