Polar Insulated Water Bottles have a double-wall construction with foil insulation to keep liquids colder or warmer longer. All Polar bottles are BPA free and contain no phthalates Removable carry loop Dishwasher safe, rubber valve is removable for cleaning Made in the US of LDPE plastic #4 Double wall construction and unique reflective foil insulation keep your drinks cold Item SpecificationsColorBlue FadeOunces12fl ozBottle TypeBike,Insulated