Box Contains 3 X Medela 150 Ml Breastmilk Bottles With Lids And Discs. The Medela Bottles (Medela Storage Bottles) Are Compatible With Medela Breast Pumps And Teat-Like Calma Devices (Medela Calma Teat), Meaning Milk Storage Can Be Done Without Breast Milk Wastage Or Extra Washing Up. Medela Breast Milk Storage Bottles Are Designed For The Safe, Long-Term Storage Of Breast Milk. They Can Be Used To Store Milk As Well As Feed The Baby If Bought With The Medela Breastfeeding Device For Breastmilk Bottles (Medela Calma Teat).