I've opened the package, but... I'm selling it because I haven't used it even once. Retail Price: ¥1,089 ▼Official Website Product Description This straw mug has a lid, making it convenient for carrying and less likely to spill if it tips over. Recommended for babies around 8 months old for straw-drinking training. With cute floral and dinosaur patterns, children can enjoy using it♪ The lid opens easily with a single push. It has a scale that makes it easy to see how much liquid is inside. (Measures from 20 to 200ml, in 10ml increments) It has a soft silicone rubber spout that's easy for children to drink from, and a spare spout is also included. The handle is removable, so you can remove it when your child can hold the mug firmly or when you want to save space when you're out and about. Microwave safe for the main body only〇 ※Lid, spout, and other parts are not microwave safe× Not dishwasher safe× ※BPA-free (Does not contain BPA, an environmental hormone.) 【About Sterilization】 Chemical sterilization〇 Microwave sterilization for the main body only〇 ※Lid, spout, and other parts are not microwave sterilization× Not boil sterilization× ※For chemical sterilization, use a baby-safe sterilizing solution and follow the instructions for use for each sterilizing solution.