SAFE MATERIALS FOR KIDS: Fimibuke kids insulated water bottle is made of premium 18/8 stainless steel, fully resistant to oxidation and corrosion. This water bottle comprises BPA-free, food-safe, non-toxic materials, making it safe for your kids. In order to maintain the vibrant colors, please clean the cup by hand washing. This metal water bottle includes 1 Toddler Stainless Steel Water Bottle, 1 Leak Proof Lid, 2 Straws, 1 Straw Cleaning Brush DOUBLE WALLED VACUUM INSULATED: With double-walled vacuum insulation, these kids cups can preserve beverage temperature up to 24 hours for cold and 12 hours for hot. In addition, the double walled design makes the bottle sweat-free, allowing to carry kids favorite drinks around to keep them hydrated without making messes. Also, the top mouth is wide enough for convenient refilling and inserting ice cubes or fruits. This is designed to preserve the quality and temperature of kids beverage LEAK-PROOF & PORTABLE: With this sippy c