A foot-receiving device, comprising: a foot-covering member; and a foot-supporting member engaged with the foot-covering member, wherein the foot-supporting member includes: a first impact-attenuating member located in a heel portion of the foot-supporting member, and a second impact-attenuating member separate from the first impact-attenuating member, wherein the second impact-attenuating member is located at a rear, lateral heel portion of the foot-supporting member, and wherein the second impact-attenuating member provides less resistance to an impact force as compared with the first impact-attenuating member, wherein each of the first and second impact attenuating members includes: (a) a rigid box shaped outer frame structure having a top wall, a bottom wall, two opposing side walls (802c, 802d), the side walls curving outwardly to create bowed sides between the top wall and the bottom wall, and two open opposing sides (802e, 802f), and (b) an interior member made from a foam impact-attenuating material located in the outer frame structure. a foot-covering member; and a foot-supporting member engaged with the foot-covering member, wherein the foot-supporting member includes: a first impact-attenuating member located in a heel portion of the foot-supporting member, and a second impact-attenuating member separate from the first impact-attenuating member, wherein the second impact-attenuating member is located at a rear, lateral heel portion of the foot-supporting member, and wherein the second impact-attenuating member provides less resistance to an impact force as compared with the first impact-attenuating member, wherein each of the first and second impact attenuating members includes: (a) a rigid box shaped outer frame structure having a top wall, a bottom wall, two opposing side walls (802c, 802d), the side walls curving outwardly to create bowed sides between the top wall and the bottom wall, and two open opposing sides (802e, 802f), and (b) an interior member made from a foam impact-attenuating material located in the outer frame structure. a first impact-attenuating member located in a heel portion of the foot-supporting member, and a second impact-attenuating member separate from the first impact-attenuating member, wherein the second impact-attenuating member is located at a rear, lateral heel portion of the foot-supporting member, and wherein the second impact-attenuating member provides less resistance to an impact force as compared with the first impact-attenuating member, wherein each of the first and second impact attenuating members includes: (a) a rigid box shaped outer frame structure having a top wall, a bottom wall, two opposing side walls (802c, 802d), the side walls curving outwardly to create bowed sides between the top wall and the bottom wall, and two open opposing sides (802e, 802f), and (b) an interior member made from a foam impact-attenuating material located in the outer frame structure. (a) a rigid box shaped outer frame structure having a top wall, a bottom wall, two opposing side walls (802c, 802d), the side walls curving outwardly to create bowed sides between the top wall and the bottom wall, and two open opposing sides (802e, 802f), and (b) an interior member made from a foam impact-attenuating material located in the outer frame structure.