Richell Mag Series SD Allows for proper step-up development. Recommended by dental universities and pediatric dental clinics. Drinking training strengthens the lips, which is said to affect tooth alignment. An easy-to-hold children's mug series set with a straw, suitable for babies 5 months and older. The yellow lid has been used about 3 times, but Including unused items, All items have been boiled and sterilized with alcohol. The straws have not been put in the mouth at all. Please boil the items once before use. Comes with the instruction manual and will be sent in the original box. Please let me know if you don't need the box. When putting the items away, The box didn't fit and tore. Please check the photos. The 5-month-old mug is broken, so I will send a cup that is not Richell. - Brand: Richell - Set Contents: Mug, Straw, Lid, Snap Bottle - Colors: Mint Green, White, Yellow - Target Age: 5 months and up - Features: With straw, easy-to-hold handle - Quantity: 8-piece set including small items *Please note that as this is amateur storage and inspection, there may be overlooked stains or imperfections. Please refrain from purchasing if you are concerned about minor details. Thank you for looking.