Protector Attack 13 MNThe all new Protector Attack binding offers Full Heel Release (FHR) technology, a first in our Attack series. Head's innovative FHR technology delivers intelligent 180 release, both horizontally and vertically. This new technology can lower release values in forward and especially backward twisting fall situations, which reduces the risk of suffering a knee injury. Thanks to its MN standard, the binding works with alpine, touring and GripWalk ski