Thermos Star Wars Darth Vader Stainless Steel Vacuum Insulated Kids Water Bottle TherMax double wall vacuum insulation for maximum cold temperature retention Kid-proof design: unbreakable stainless steel interior and exterior withstand daily wear and tear 12 ounce bottle retains cold temperatur up to 12 hours and is perfect for juice, milk or water Easy-opening hygienic lid with pop-up straw Sweat -proof design won't leave water rings