Polar Insulated Water Bottles have a double-wall construction with foil insulation to keep liquids colder or warmer longer.Double wall construction and unique reflective foil insulation keep your drinks coldRemovable carry loopAll Polar bottles are BPA free and contain no phthalatesMade in the US of LDPE plastic #4Dishwasher safe, rubber valve is removable for cleaningBPA freeItem SpecificationsColorBig BearOunces20fl ozBottle TypeBike,Insulated