Custom-butted, 6066-T6 alloy construction. Variable Radius Compact Flare (VR-CF) increases wrist clearance for ergonomic positions. Compatible with clip-on aero bars. IsoZone pads displace vibration by 20% to reduce hand numbness. Flat front for dual-cable routing. Laser-etched brake lever position lines for spot-on control set up. Includes two upper IsoZone closed-cell pads.