The Kaliente is Kenda's super lightweight race tire. A supple 120 TPI casing, a 125 PSI rating and their L3RPro rubber all combine beautifully for excellent ride quality, low-rolling resistance and increased tread life. Plus, you get Kenda's best puncture resistant material. Iron Cloak is a layer of material under the tread that runs bead to bead. In addition to helping prevent punctures it adds strength to the sidewalls with minimal weight to the tire.