Hydroflask 40 oz Wide Mouth with Flex Straw Cap Colours:SURF Rigid external heel cup for

Rigid external heel cup for lateral stability

Composite safety toes

Impact resistant with slight flexibility

Solid poly-spandex

long-lasting and fresh

Hydroflask 40 oz Wide Mouth with Flex Straw Cap Colours:SURF Rigid external heel cup forFlip it and sip it with the Hydro Flask 40 oz Wide Mouth Bottle With Flex Straw Cap. With a comfortable, flexible handle, the closeable, leakproof straw cap is easy to open and close with one hand, for on demand hydration. Double wall insulation keeps drinks cold up to 24 hours for cool refreshment. The insulated bottle easily fits ice cubes and is dishwasher safe. 24 hours cold TempShield? double wall vacuum insulation Leakproof when closed Pure