To improve the heat retaining property, hygroscopicity and exhalation property of a sleeping mat having three layered battings, and to improve the handling by making the sleeping mat light weighted and foldable.

A sleeping mat C comprises an upper covering layer body 1 comprising floss 11 and a cover 12, a non-covering layer body 2 and a lower covering layer body 3 comprising the floss 31 and a cover 32, and the non- covering layer body 2 is inserted between the upper covering layer body 1 and the lower covering layer body 3. The upper covering layer body 1 is quilted 13, and hollow portions 14, 14 are formed on its lower and upper faces. The lower covering layer body 3 is quilted 33, and hollow portions 34, 34 are formed on its lower and upper faces. A peripheral edge 4 is temporarily sewn, and a cloth tape 42 is applied thereto and sewn 43. The upper covering layer body 12, the non-covering layer body 2 and the lower covering layer body 3 are sewn up 5 and hollow portions 51, 51 are formed on the lower and upper faces of the mat.