Bought these TB-2s 2 years ago. After two years in my bubble bag it's a little wrinkled, picked up some dust around the edges and still works great. I had a cut on a tire with a bulging tube that resulted in an immediate puncture. I was able to patch the tube and place the TB-2 in the tire without completely removing the tire. In just a few minutes I was patched and back on the road. I was concerned the glue wasn't strong enough but the tire pressure held it in place and I was able to ride the 7 miles home. When I got home the patch showed no signs of wear so I'm sure it would have lasted a few more miles. I will never drive without one of them again.