The balanced tread works effortlessly and generously corrects errors - full control on rough terrain as well as on flowing single tracks. Super Gravity version:ADDIX Soft (orange). Puncture-proof (with Apex) with extreme lateral stability for a dynamic ride. Tubeless Easy version: ADDIX Soft (orange) or ADDIX Speedgrip (blue). Versatile. The Speedgrip version gives precise traction to the rear wheel.