Features:Fits most of wide neck breastshields of breastpumps like Spectra, Philips AventCan pump easily and directly into the breastmilk storage bagNo more breastmilk wastage when transferring from breastmilk storage bottle to bagFewer parts to washFast and convenientCan be boiled for 2-3 minutes or sterilisedMade from high quality food grade PP materialBPA Free, Phthalate Free