Patent ID: 7845031

Claim:
A sleeping bag adapted for placement over, and connection along, an upper surface of a mat having two first engaging members of the mat and two second engaging members of the mat, with a single first engaging member of the mat located in or along the upper surface at each of two first corners of the mat, and a single second engaging member of the mat located in or along the upper surface at each of two second corners of the mat that differ from the two first corners of the mat, wherein the sleeping bag comprises: first engaging members of the sleeping bag adapted to engage the second engaging members of the mat, with a first engaging member of the sleeping bag being located at each of two first peripheral positions of the sleeping bag, and the first engaging members of the sleeping bag disposed proximate to the first corners of the mat, allowing engagement with the second engaging members of the mat, when the sleeping bag is placed on the mat; and second engaging members of the sleeping bag adapted to engage the first engaging members of the mat, with a second engaging member of the sleeping bag being located at each of two second peripheral positions of the sleeping bag, and the second engaging members of the sleeping bag disposed proximate to the second corners of the mat, allowing engagement with the first engaging members of the mat, when the sleeping bag is placed on the mat; wherein the sleeping bag is devoid of additional engaging members corresponding in type to the first or second engaging members, other than the first or second engaging members disposed at said two first and two second peripheral positions of the sleeping bag; and wherein the first engaging members of the sleeping bag differ in type from the second engaging members of the sleeping bag.