Duro Slickster HF177 Folding Road Bicycle Tire - 700 x 23 (Black - 700 x 23) Features The Highest Thread Count In The Duro Line At 150 Tpi Higher Thread Counts Improve The Rolling Resistance And The Feel Of The Tire Smooth Centerline With A Slight Textured Shoulder Allow For Improved Cornering And Confidence 150 Tpi 185G