WTB Bronson Race Tyre This sleek race saddle features smooth, contoured lines with a long and flat pedaling platform.The Valcon’s carbon composite shell provides race-winning efficiency, while the DNA padding and optional LuxZone provide soft tissue relief and all-day comfort. Features: DNA RUBBER COMPOUND (2.1): Our proprietary 60a durometer rubber compound off ers the ideal mix of rolling effi ciency and traction for XC and trail riding applications. DNA rubber is renowned for being versatile and long lasting SUPER TRACK DNA RUBBER COMPOUND (2.3): This 50a durometer rubber compound provides planted-to-the-ground traction. Super Track DNA boosts confi dence and improves handling in steep, loose conditions Size: 2.1/2.3 Usage: XC/All Mountain/Freeride Conditions: Wet to dry Rubber Compound: DNA (62A)/Super Track DNA (50A)/li> Casing: 60tpi with inner piece Bead: Aramid Weight: 600g/650gBuy WTB Tyres from Chain Reaction Cycles, the World's Largest Online Bike Store.