The Tannus Tubeless Pro takes the original Tannus design and creates a more rider-friendly experience. The 20mm thick insert is perfect for hard impacts and intense cornering. Plus, the inner ribbed design allows the insert to compress together, making installation easier. Does not absorb sealant Discipline: Downhill, Enduro, Trail Thickness: 20mm Weight: 140 grams Includes insert for one wheel Ribbed Design: The new ribbed design is the basis for the Fusion system. When combining the Lite and Pro, the ribs lock into place to insure zero rolling friction between the two inserts. Sidewall Support: Tannus Tubeless Pro offers sidewall support for better handling with lower tire pressure. Tunability: Removing Lite from your Fusion creates the Pro. Reduce your weight while keeping the sidewall stability and rim protection. Run-Flat Capable: Both the Pro and Fusion inserts allow you to ride even when you do get a flat. Get the support you need to make it back to the car.