Developed exclusively for Sonata, these are the extra (or replacement!) membranes you need to use your Sonata Breast Pump.

Product Features:

• Exclusively for Sonata Breast Pump: Designed with you and your baby in mind
• Medela Authentic Spare Parts: Quality and performance you can trust
• Great as a spare or replacement set
• Made without BPA: Safe for you and your baby

Compatible Breast Pumps:

• Medela Sonata