New Other Hydrogen Flask Standard Mouth Flex Cap Graphite, 21 Ounce Cardinal PWX Technology - Superior grade

PWX Technology - Superior grade circular knit for 360º stretch + unsurpassed power

eLASTech Technology increases durability by reducing the spread of micro-fractures caused by slashes and pick impacts

New out of the box

Quick drying and moisture-wicking jersey knit liner keeps your foot dry

for first-class fit

New Other Hydrogen Flask Standard Mouth Flex Cap Graphite, 21 Ounce Cardinal PWX Technology - Superior gradeStandard Mouth 1. 81 Opening Fits The Hydro Flask Sport Cap And Standard Mouth Flex Cap With Its Double Wall Vacuum Insulated Tempshield Technology, Liquids Remain Hot Up To 6 Hours, And Cold Up To 24 Hours Thanks To The Proprietary Powder Coat, Your Bottle Stays Slip Free Making It Easy To Go Wherever You Do Fits In Most Automobile Cup Holders And Bicycle Bottle Racks