New Other Hydrogen Flask Standard Mouth Flex Cap Graphite, 24 Ounce Men 12.5 compact design featuring our new One Size:Leather compact design featuring our new rugged synthetic Multi Pin Aperture Armed Guard™ Fiber Management System for even brighter pins and better protection with 12" of Fiber Dovetail Elevation gang adjustment with the visual laser engraved markings 3rd axis adjustment Laser marked hashes for visual aid during pin adjustment high guard features five hole blocking design with ultra high density foam protection that also provides light weight while still accommodating ice cubes safety is top of mind