Great backcountry ski boot with special, anatomically designed footbed, Alpitex Waterproof Membrane and Thinsulate insulation! Leather and textile upper is durable and looks pretty darn good. Suiteble for Rottefella NNN BC bindings. Alpinas own Alpitex Waterproof Membrane makes the boot water-resistant while keeping the boot well ventilated so it is pretty awesome boot to cover your feet on the spring time ski tours. Anatomic footbed will assure the perfect fit and even distribution of force. And finally, the insulation by Thinsulate. Thinsulate insulation system guarantees conditions for the feet that are twice as warm than other boots.The lining lets your feet breathe and regulate the natural physical feeling of the foot. We recommend to choose one size bigger shoe size than you would normally do since the sizing of this boot is quite tight. Toe box protection Thinsulate insulation Speed lacing system Soft collar Natural leather Medium boot flex Anatomic footbed Alpitex membrane