This is a set of Pigeon nipple shields (size M, 4 pieces) and a Kaneson nipple shield (1 piece). Includes a storage case. Thank you for looking. The Kaneson shield is new and unused. The Pigeon shields were purchased around March 2023, and 2 of the 4 were purchased later. They should still be usable. Usage period: 2 of the 4 were used for about a month, and the other 2 for about 1-2 weeks. I was keeping these in case I needed them for my youngest child, but I didn't end up using them, so I'm selling them. Please understand that these are used items before purchasing.