This set of ten VIA Disposable Bases are part of Avent's new VIA feeding and storage system. Instead of flimsy liners, the VIA system uses these sturdy, disposable containers! The recyclable VIA bases are affordable enough to throw away, or they can be re-sterilized and used up to three times for feeding and fridge/freezer storage. The bases are also writeable, so you can keep track of usage, record the date, or personalize with your baby's name.