This bundle includes two Outdoor Products Tadpole Hydration Packs, available in Black with Violet Tulip and Black with Bright Blue accents. Both packs are made of durable polyester, measure 13.5 x 7.5 x 2.1 inches, and have a 3.5L capacity. The key features common to both packs include a 1.5L reservoir to keep you hydrated on adventures, heavy duty zippers and cord pulls, a top carry handle, compression straps, lightweight mesh shoulder straps for comfort, a roomy main compartment, a top stash pocket for quick access to small items, and a front compartment with a key clip. The Violet Tulip accented pack adds a pop of color that complements the black nicely. The Bright Blue accented pack provides a bold, vibrant look. With the two color options, you can coordinate your hydration pack with the rest of your gear or outfits. Both packs are covered by the Outdoor Products lifetime guarantee so they will withstand years of use. Stay hydrated and organized on all your outdoor excursions with this useful bundle.