The Fischer XC Comfort Pro is an excellent ski boot for the recreational skier looking for comfort and easy skiing. A Triple-F Membrane prevents any water or snow from getting inside the boot and prevents your feet from becoming too warm or sweaty by being highly breathable. An Injected Exterior Heel Cap keeps your heels locked down to add extra control and to prevent blisters. Fischer's Speed Lock System allows you to pull the cinch cord tight and you know that it will stay tight all day long. The XC Pro is only compatible with NNN XC Bindings.