The NUK Sensitive Ergonomic Breast Pump has super soft, contoured, silicone cushions that mould to the shape of mother"s breast and gently massages while expressing. The Sensitive Ergonomic Breast Pump set from NUK includes: First Choice Anti-Colic Wide Neck Teat Silicone, Size 1 (0-6 months), S (small Feed hole). Screw Ring, Protective Cap Sealing Disc, Stand, Breast milk container.