To provide a mattress incorporated with packed charcoal particles by which a digital compression effect is obtained while sleeping and dehumidifying, deodorizing and rustproof effects are obtained.

This mattress is provided with an envelope body including an upper fabric 1, an inner fabric 3 and a lower fabric, and a cotton body uniformly inserted between the fabric 1 and the fabric 3. Then, the envelope body has plural parallel seams formed by sewing the fabric 1, the fabric 3 and the fabric 4 with the cotton body in the state of stripe. In addition, between the fabric 3 and the fabric 4, the mattress includes plural parallel bag-like spaces 5A, 5B defined by the parallel seams are included and is formed of the belt-like packed charcoal particles inserted to each of the spaces 5A, 5B and an edge winding fabric 7 covering the limb of the envelope body. In addition, the envelope of the mattress has a rectangular plane made of long edges and short edges and the plural spaces formed between the fabric 3 and the fabric 4 are formed at a right angle to the long edges and in parallel with the short edges.