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Specialized's BlackBelt Puncture Protection.


BlackBelt is Specialized's most efficient and dynamic puncture protection for their fastest tires. A strip of tightly cross-woven material (see image, red) is tucked directly under the tread, providing ultra-tough puncture and cut resistance. This lightweight barrier protects against glass, nails, or whatever else the road throws in your way, and is highly flexible to keep rolling resistance low.