Flip it and sip it.A cupholder-compatible water bottle with our leakproof Flex Straw Cap—easy to fill easy to drink. Open it up add your ice and flip to sip. The insulated stainless steel keeps it cold for up to 24 hours.24 hours cold 12 hours hotTempShield®? double-wall vacuum insulationInsulated Flex Straw Cap is leakproof when closedMade with 18/8 pro-grade stainless steel for durability pure taste and no flavor transferFits most cupholdersColor Last™ powder coat is durable sweat-free and colorfulDishwasher safeFlex Straw Cap not intended for use with hot liquidsNot for use on a stove in a microwave or freezer