ICE Formula Pro X-Guard - 700 x 23C - Flat Defender 
 
The toughest tire in the IRC Pro Formula series, the X-Guard gets its name from an added X-Guard Belt that adds a layer of protection to the tire. Featuring a smooth tread with a durable long wearing compound and a 40x40 tpi layer of X-Guard puncture protection to resist flats without compromising the comfort of the ride or rolling resistance. It is best suited for training or racing in dry to damp conditions.