Ello Oasis 18oz Stainless Steel Tumbler - Winging It

100% LEAK-PROOF: The innovative retracting straw technology ensures this tumbler can be tossed into a backpack or bag spill-free. HIDE A STRAW TECHNOLOGY: The soft, silicone straw tucks away with a quick turn of the lid dial, making the lid leak-proof and keeping the drinking surface clean when not in use. It’s perfect for school and on-the-go! DISHWASHER SAFE: Designed for convenience, the Oasis Tumbler is both BPA free and top-rack dishwasher safe for easy cleaning. KEEPS COLD FOR HOURS: Keep drinks cold for up to 18 hours, so your favorite beverages are the perfect temperature all day long. TRAVEL FRIENDLY: The 18oz size fits in backpacks, lockers, and cup holders. It’s great for the classroom, lunch, or after-school activities., Weight: 0.84 Pounds, Manufacturer: Leapfrog Brands