STAINLESS STILL : Made with 316 stainless steel on the inside and 304 stainless steel on the outside, offering excellent durability and thermal insulation for both hot and cold retention. LEAK FREE : Ideal choice! Cross cut (+) Straw ensures spill-free drinking even if you shake or fall. SILICONE STRAW : The ultra-soft straw is gentle on the gums and comes with a stage 2 straw. For babies under 12 months, it can be replaced with a stage 1 straw (sold separately). VACUUM INSULATED : Keeps beverages cold or hot during the play time. EASY CLEAN : Made up of simple parts, straw cup is easy to clean and assemble. All Parts are dishwasher safe. Say goodbye to messes with Korea’s #1 premium brand. Our +cut straw cups stop spills, mix-and-match parts adapt as your baby grows, and wide-neck bottles make cleaning