Top of the line road race tire for race, triathlon or time trialGSR - Improved grip, reduced rolling resistance and longer wearRSH - Improved puncture protection under the tread while maintaining overall performanceOTC - Reduced thickness and speed focussed tread pattern for ultimate performanceTubeless700x25622TBLS - FoldBeltedBk/BlkGSR/RSH/OTCNo