Material:TPU (Thermoplastic Polyurethane). Technical Specifications：.
6 X Pack each pack 2 inner Road Ultralight TPU Bike Inner Tube 28'' 700c, 35g
2 RideNow Ultralight TPU Bike Inner Tube 700x18-32c 45/65/85MM Presta Tubolito
2 RideNow Ultralight TPU Bike Inner Tube 700x18-32c 45/65/85MM Metal Presta FV
2 RideNow Ultralight TPU Bike Inner Tubes 700x32-47c 45/65/85MM Presta Tubolito
2 Ultralight TPU Bike Inner Tubes 700x18-28c 45/65/85MM Presta Tubolito
