316 Surgical-Grade Stainless Steel: Safety is the priority when choosing products for our kids. We use the best-in-class materials for every part of our products. Our bottles are made with 316 Surgical-Grade stainless steel inside - a metal premium than 18/8 stainless steel in rust-free and purity. Our straw caps are BPA Free and Toxin-free so that every sip of water is healthy and fresh for our kids. | Perfect Cold Insulation: We use the triple wall, vacuum-insulated technology to keep your drinks cold for 24 hours. Putting ice in the morning, we promise you will still have ice in the afternoon. Please note the straw cap is not for hot content. | Easy to Use for Kids: It is a convenient size ideal for kids to keep all-day hydration. The spill-proof folding straw lid ensures kids get a smooth and paced flow when drinking. The cap is 100% leak-proof when closed. The soft belt on the lid is easy-carry comfortable for kids. | Dishwasher Safe & Transparent Spout: Nothing is more comforting than seeing our children using sanitary hygiene bottles. A transparent spout helps parents to see through and avoid dirt hiding inside. Cleaning the straw and the spout with the small brush is super easy. Both the body and straw cap are dishwasher safe. The color prints won’t fade or peel. | Trusted Travel Companion: The bottle is capacity slim to fit in most cup holders and the side pocket of a backpack. It’s ideal for taking to school, picnics, camping or road trips.