Bontrager Self-Sealing Thorn-Resistant Schrader Valve Bicycle Tube

Bontrager Self-Sealing Thorn-Resistant Schrader Valve Bicycle Tube
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Bontrager's Self-Sealing Thorn-Resistant tubes are the ultimate defense against flats. With a beefy 4.1mm thickness along the tread and sidewalls, these tubes scoff at the foreign materials on a mission ruin your day. And, if somehow a rogue thorn or piece of glass manages to penetrate the defenses, these tubes pack a sealant inside that instantly seals small hole punctures.