They took their viral 40 oz Traveler and shrunk it down to 20 oz. The 20 oz Traveler is completely leakproof, cupholder compatible, and has a hygienic circular flip straw for easy sipping. The 20 oz Traveler comes with a removable silicone boot that's perfect for protecting your bottle and your surfaces. Perfect for both you and your mini me's, this new size is a must-have in your hydration lineup.