Storage made easy mam sealing discs 0m transform all mam bottles and the trainer to storage containers quickly and easily also ideal for on the go breast milk and other liquids can be stored safely and hygienically in the fridge or the freezer simply push sealing disc into the bottles screw ring and click into position mam sealing discs 0m features pack includes 3 sealing discs seals bottle completely for safe storage transforms all mam bottles and trainers in stora