The new Prodigy Rainfly has been redesigned for improved function and ease of use. Keep your bag dry while maintaining quick, hassle-free access to your discs and equipment. Installation and removal is a breeze. The Prodigy Rainfly can fit the Apex, Apex XL, BP-1 V2, BP-1 V3, BP-2, and BP-2 V2 Backpacks, and even features a slot that allows you to use the handy umbrella sleeve while the rainfly is installed.