2 Tubing for Medela Pump in Style and New Pump in Style Advanced Breast Pump - 100% BPA Free, and Medela Compatible. Replacement Parts for Medela Tubing Part # 87212, 8007212
You can follow EXACTLY like Medela's instruction to sterilize the tubing without a problem. We do advise to "wash with cold water"  because many Medela users do not follow the sterilization instruction EXACTLY and melt their tubing in the microwave.