Review on Park Tool TB 2 Emergency Tire by Nate Mims

Works great. I had a huge screw in my Continental Gatorskin that snapped a couple of the laces. I popped one of them in, replaced the tube, bled it to 120psi and there was no bulge at all at the puncture site. I carry them in my small wedge bag. They take up almost no space. The packaging says to use it to get you home in an emergency, but I'll keep riding this tire with my boots on. I'm sure it will last. For a few bucks I saved a $50 tire.