The Shield is the workhorse of Tannus puncture proof tires. Made with the Tannus patented Aither 1.1 puncture-proof compound, this tire is the most versatile because it comes in the largest array of different sizes, making it good for most situations. The tread pattern is mildly-aggressive and provides traction on dirt with enhanced capability for on road conditions, however, the Shield does not shy away from gravel, curbs, or dirt roads. It is a general use tire that is guaranteed for 5,000 miles of whatever you can throw its way. It will not bend out of shape in the sun, the snow, or the sprinklers.