Description - Grosmimi Stainless Steel Straw Cup is made of high quality 304 stainless steel. The newest version features great improvements in coating, design, and the addition of flip-top - This cup with the newest, dome shaped flip-top lid (One Touch Cap), has a lock feature, and is much easier for the baby to use with one hand. Stage 1 Straw kit is included - Vacuum Insulated: Keeps beverages hot and cold up to 6 hours. - Leak-Free: ‘+ CUT’ prevents any leak from the bottle, 2-way of using allows baby to drink no matter sitting down (with the tube) or lying down (without the tube) - Easy to Clean: It is so easy to separate all the parts for hygienic cleaning and reassemble them in a few seconds - Stage 1 Straw can be replaced with Grosmimi Replacement Straw kit Stage 2 for babies over 12 months RECOMMENDATIONS & WARNINGS: - Always use this product with adult supervision - Never use straw teats as a soother - Continuous and prolonged sucking of fluids will cause tooth decay - Always check food temperature before feeding - Inspect before each use and pull the feeding teat in all directions.