From BruMate’s Website: A 100% leakproof straw tumbler designed for kids. With leakproof technology to prevent spills, a protective silicone sleeve to prevent dents + dings, triple-insulation for all-day cold drinks, and a cold-key straw that keeps plastic from sitting in water, the Leap is built to handle everyday adventures. Perfect for school, playdates, and activities on the go, it comes in a variety of fun colors to match your child's unique style.