Brand new never opened sterile This kit includes everything moms need for expressing and storing breast milk. Each Sterile kit includes: 2x PersonalFit Connectors 2x 35ml Containers + Lids 2x 80ml Containers + Lids 2x 24mm Breast Shields 2x 27mm Breast Shields 2x Valves, Tubing, Membranes & Caps 4x Membranes (white)