18oz (532mL) Standard Mouth Flex Cap reef Straw is easy to trim

Straw is easy to trim to fit your favorite Hydro Flask

it's right at home on the open road

insulated Flex Straw Cap

this mug is ready to give you a boost

Flip it and sip it

18oz (532mL) Standard Mouth Flex Cap reef Straw is easy to trimYour daily sip. Stainless steel and cupholder compatible, the reusable, refillable 18 oz Standard Mouth insulated water bottle keeps cold drinks cold for 24 hours, hot drinks hot for up to 12 hours, and holds enough hydration for hours of fun. 24 hours cold, 12 hours hot TempShield double wall vacuum insulation Leakproof when closed Pure taste, no flavour transfer Durable stainless steel Fits most cupholders BPA Free Dishwasher safe Not for use on a