Only Medela offers replacement tubing tested and designed to work with your Freestyle Flex Breast Pump. Medela tubing is great as a spare or replacement to worn or damaged tubing. Compatible only with the Freestyle Flex Breast Pump. Features & Benefits Quality & performance: Replacement tubing makes it easy to ensure optimal performance for your breast pump; Medela Authentic Spare Parts provide quality and performance you can trust: Have spare tubing for work or travel, or a replacement for lost or damaged tubing; Designed & Tested: Works with Medela's Freestyle Flex Breast Pump; Made without BPA: Safe for you and your baby;.