ContiTPU Tubes are Continental's Lightweight Response to 7 Layer Dip, from just 35g!
Briefly

Fully made in Germany, the Continental ContiTPU tubes are constructed with 7 layers of thermoplastic polyurethane for extra durability without added weight, suitable for modern road, gravel, and mountain bikes.
The ContiTPU tubes are designed to be the lightest TPU inner tubes available, emphasizing airtightness, durability, and packability, providing a spare option for cyclists using tubeless setups for emergencies.
Read at Bikerumor
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