3L reservoir by Osprey packs, used a handful of times. 15 x 7 x 3 in. BPA free. No visible wear, thoroughly clean and dry, and has been stored airtight. Willing to throw in 1/2 off <$10 items for sale on my page, as bundled & still shipped free 🍀🍀🍀 Please let me know if you have questions. Thanks for your interest :)