????ââï¸ ãUpgraded Adjustable 12% InclineãThe new P11 PRO foldable treadmill features an upgraded incline system with 3 manual levelsâ1%, 6%, and 12%. Whether youâre walking, power hiking, or simulating uphill climbs, this incline treadmill lets you adjust the intensity and burn up to 70% more calories than on a flat surface.