The Michelin AirStop Inner Tube has a butyl construction that holds air better than standard tubes and is more resistant to punctures.
- .9mm thick butyl construction for reliable performance in all applications
- Tread compound formulated for high mileage
ISO Diameter (ETRTO): 622
Valve Type: Presta
Valve Length: 40mm, 52mm, 80mm
Removable Valve Core: -
Puncture Protection: -
This product was added to our catalog on March 5, 2019
As far as I know these tubes are fine. My tire liners had small slits causing the tubes to wear and appear to separate.
Sorry for the misinformation.