With a size of 30mm XL, this Medela PersonalFit Breast Shield is suitable for mothers who want to ensure a perfect fit. The shield is made by Medela, a trusted brand in the baby feeding industry. Never been used - brand new. Purchased the wrong size in error! 4 breast shields available - please note that the photos show all four breast shields available for purchase, but if you purchase one unit you will only receive one breast shield. If you wish to buy all 4 breast shields, you will need to add all 4 items to your basket. Happy to combine postage for multiple items purchased.