Flat less. Ride more.

Protect yourself from flats with Bontrager Thorn Resistant tubes. Asymmetric design uses thicker rubber on the tread side and thinner rubber elsewhere, which saves weight while maximizing puncture protection.

Product details

1. 4.1mm thickness (tread side)
2. Asymmetric extrusion puts extra rubber along tire sidewall and tread zones
3. 100% inspected for guaranteed quality

   Size		29" x 1.9-2.125"
   Diameter		29"
   Width		1.9-2.125"
   Length		48mm
   Valve		Presta
   ETRTO		50/54-622
   Weight		680g