Gear Review GSI Outdoors Flask - 18fl. oz. 4 5 Community Rating | 11 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 5 5 I like it alot. Jesse Russell Member since Dec 9, 2009 Posted on September 7, 2009 It's a really nice flask to have. Great item to buy if your trying to just get enough for free shipping like me. (0) allix Member since Nov 18, 2009 Responded on November 18, 2009 thats exactly why im looking at this! (0) View More Details on GSI Outdoors Flask - 18fl. oz.