The Fischer RC4 120 MV BOA boot is a hard-charging boot made for ticking off grail-worthy trails all over the mountain. The BOA fit system locks in a perfect fit so we can ski harder with minimal energy loss on big slopes. The iFZ Performance liner and VACUUM shell offer big-mountain performance with big-time comfort, so we can lap the mountain until the lifts stop running. GripWalk soles allow us to traverse short distances to reach the biggest drop-in on the mountain to cap off a memorable day on the hill.