The AirStop has a butyl construction that holds air better than standard tubes and is more resistant to punctures.
Tread compound formulated for high mileage
0.9mm thick butyl rubber construction for reliable performance in all applications
Specs:
Size: 26x1.45-2.6
Valve: Presta 40mm
ISO Diameter: 559 / 26" Mountain
Valve Core: Non-removable
Shaft Type: Threaded
Wall Thickness: 0.9 mm
Weight: 194 g