Gear Photo GSI Outdoors Flask - 18fl. oz. 4 5 Community Rating | 8 Reviews $9.90 Item # GSI0150 One Color, One Size ($9.90) Quantity Add to cart View full product page Tech Specs Material: BPA-free resin Volume: 18 oz Lid(s): 1 Claimed Weight: 113 g Recommended Use: backpacking, camping Manufacturer Warranty: lifetime Lid and threads Michael Kisow Member since Dec 13, 2008 Posted on May 2, 2010 Helpful? (0) View More Details on GSI Outdoors Flask - 18fl. oz.