A crawler that has a specified rotation direction, the crawler comprising: a crawler body, that is formed from an elastic material in an endless shape, entrained around a drive wheel and a follower wheel (102, 104); and a plurality of lugs that are provided at the crawler body, that project out from an outer peripheral face of the crawler body, that, as viewed from a crawler outer peripheral side, are allocated to one side and another side in a crawler width direction so as to be alternately disposed on progression along a crawler peripheral direction on each side of a central line passing through a crawler width direction center, and that extend at an angle to the crawler peripheral direction from an end portion on the central line side toward a crawler width direction outer side and toward an opposite side to a crawler rotation direction, wherein, in a cross-section of the lugs taken along the crawler peripheral direction, an angle (θ1) formed between each apex side portion of tread-in-side wall faces on the crawler rotation direction side and the outer peripheral face is 90 degrees or greater, and is smaller than an angle (θ2) formed between each apex side portion of kick-out-side wall faces on the opposite side to the crawler rotation direction and the outer peripheral face, characterized in that, in a cross section taken along the crawler peripheral direction, an angle (θ3) formed between each base side portion formed at a position lower than a central portion of a lug projection height of the kick-out-side wall faces of the lugs and the outer peripheral face is 90 degrees or greater, and is smaller than an angle (θ2) formed between each apex portion of the kick-out-side wall faces and the outer peripheral face. a crawler body, that is formed from an elastic material in an endless shape, entrained around a drive wheel and a follower wheel (102, 104); and a plurality of lugs that are provided at the crawler body, that project out from an outer peripheral face of the crawler body, that, as viewed from a crawler outer peripheral side, are allocated to one side and another side in a crawler width direction so as to be alternately disposed on progression along a crawler peripheral direction on each side of a central line passing through a crawler width direction center, and that extend at an angle to the crawler peripheral direction from an end portion on the central line side toward a crawler width direction outer side and toward an opposite side to a crawler rotation direction, wherein, in a cross-section of the lugs taken along the crawler peripheral direction, an angle (θ1) formed between each apex side portion of tread-in-side wall faces on the crawler rotation direction side and the outer peripheral face is 90 degrees or greater, and is smaller than an angle (θ2) formed between each apex side portion of kick-out-side wall faces on the opposite side to the crawler rotation direction and the outer peripheral face, characterized in that, in a cross section taken along the crawler peripheral direction, an angle (θ3) formed between each base side portion formed at a position lower than a central portion of a lug projection height of the kick-out-side wall faces of the lugs and the outer peripheral face is 90 degrees or greater, and is smaller than an angle (θ2) formed between each apex portion of the kick-out-side wall faces and the outer peripheral face.