?Premium Material?: Made Of Premium 18/8 Stainless Steel, No Odor And Unbreakable. No Worry About Rust Even After A Long Time Of Use. The Straws Are Made Of Flexible Silicone, They Will Not Hurt Your Kid'S Teeth Or Lips. The Anti-Scalding Silicone Sleeves Will Ensure The Comfort And Safety Of Your Kids. Total 5 Different Colors Help You Distinguish The Cups When Used. | | ?Shatterproof Unbreakable?: Our Drinking Cups Are Durable Enough To Survive Multiple Bumps And Accidental Falls. You Do Not Need To Worry It Will Break And Hurt Your Kids. The Premium Stainless Steel Material Lasts Longer Than Plastic And Glass. Perfect For Someone Who Tends To Drop Their Drinkware. | | ?Leak-Proof Multifunctional?: The Crystal Lid With A Double Ridge Seal Gasket Design Ensures Leakproof And Spillproof, The Liquid WonT Spill Out Of It Even If You Turn Them Upside Down All The Way. The 2-Way Drink Hole On The Top Is For Direct Sipping Or Using A Straw, Silicone Tips Can Be Used Wit.