The components (cup, lid, adaptor) of the new Philips AVENT storage cups are not compatible with the components of the old Philips AVENT storage cups.
The new Philips AVENT storage cups can be recognized by an outer tread twist-on lid. The old Philips AVENT storage cups have an internal screw mechanism.
Philips AVENT breast pumps, Natural and Classic teats are compatible with either the new or the old cups with adaptors.