It is simple , but very practical in use, which brings great convenience to you. These beverage bottle lids are durable for your baby to use for a long time. Designed for your baby's comfort, they will not hurt baby's delicate skin and ensure they are safe to use. Features -Color:Assorted Color -Material: PP -Size: 6.50X4.50X4.50cm/2.55X1.77X1.77 in. -Note: Suitable for beverage bottle with 2.8cm diameter - Easy to clean, which can ensure the safety and of products and your baby. - They are intimate products which are specially designed for nursing mothers and infants. - They are lightweight and you do not need to worry about they will make you tired. - Their simple structure and safe material makes them easier to be cleaned. - Light in weight and small in size. They are very easy for novice mothers and can be easily put in a backpack or bag. Package list: 4 x covers