This is a set of 5 M-size nipples for Pigeon baby bottles. ① Completely unused (with latch online) - 1 piece ② Used (with latch online) - 3 pieces ③ Used (without latch online) - 1 piece Items ② and ③ were opened new and used in a rotation of 4 for one month. They were sterilized by boiling after each use, and the color is still good. The second photo shows the product information for ① and ②, and the third photo shows the product information for ③. When shipping, they will be flattened to make them compact, so please be aware of this.