Versatile external storage for water bottles, food, and gear. Compatible with all Arkiv modular backpacks. Features a convenient elastic drawstring closure and a brass grommet drain hole.Each Bottle Pouch adds 1.5L or 87.5 cubic inches of storage capacity to your ArkivA(R) modular backpack and can be easily added or removed as needed.The ArkivA(R) Bottle Pouch is constructed using ECOPAK(TM) EPX 200 made with 100% recycled REPREVEA(R) rPET fiber and backed by Challenge RUV(TM) film, ECOPAK(TM) fabrics deliver exceptional weatherproof performance, absorbing 80% less moisture, resisting UV exposure 5x longer than conventional films, and maintaining superior color and durability over time. The Bottle Pouch is also available in VX21 to pair with the classic packs such as the R6 and Radian.The Bottle Pouch is featured on the new Control Pack Kit 4.Made in the USA