24 hours cold, 12 hours hot TempShield double-wall vacuum insulation Leakproof when closed Pure taste with no flavor transfer Durable stainless steel Wide Mouth opening is ice-cube friendly Bottle fits most backcountry water filters BPA-Free Dishwasher safe Not for use on a stove, in a microwave, or freezer Keep hot liquids out of the reach of children Stainless steel, insulated, refillable, reusable *our all-day 32 oz wide-mouth water bottle is the flask to grab to keep cold drinks cold and hot ones hot. The large opening makes it easy to add ice *and get yourself a bigger gulp.