Flip it and sip it.A 32 oz Wide Mouth water bottle with Hydro Flask's leakproof Flex Straw Cap and boot—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 hot. Temp. Shield double-wall vacuum insulation. Dishwasher safe. Leakproof when closed. Pure taste no flavor transfer. Wide Mouth opening is ice-cube friendly. Bottle fits most backcountry water filters. BPA-Free. Dishwasher safe. Flex Straw Cap not intended for use with hot liquids. Not for use on a stove in a microwave or freezer. Bottle fits all Wide Mouth caps and lids