HydroJug 20 oz Travel Tumbler. HydroJug took their fan-favorite 40 oz Traveler and made it just right for kids! The 20 oz Traveler is lightweight, 100% leakproof with the straw down, and fits perfectly in cupholders and backpacks. The easy-to-use flip straw makes sipping a breeze, and the removable silicone boot keeps it safe from drops and dings. Whether it’s for school, sports, or adventure days, this kid-friendly bottle is a must-have for staying hydrated on the go. Completely leakproof. Circular flip straw with hygienic flip tab. Cupholder compatible. Ergonomic handle. Included silicone boot. Triple wall insulated to keep your beverages ice cold. BPA free. Durable to last for years to come. Dishwasher safe. Do not freeze or microwave. Imported.