Cross-country ski shoe

Sport shoe for walking and cross-country skiing, said shoe comprising an upper with a substantially rigid heel cap, said upper having an upper edge adjacent an upper edge of the heel cap, and including a substantially rigid collar attached at a joint to the heel cap of the shoe and designed to encircle the lower leg of a user, said joint allowing substantially free unconstrained pivotal movement of said collar in both forward and rearward direction with respect to said upper when encircling the lower leg of a user, wherein the upper edge of the heel cap is adjacent to the malleolus of a leg of a user, and in that the attachment of the rigid collar occurs at said upper end of the heel cap, said collar extending upward from the joint beyond an upper edge of the upper, said upper being formed from a substantially supple material the material being sufficiently supple so that the rolling of the foot during the cross-country walking movement will not be hindered.