Bed mattress 1,Item size:35.4"W*74.8"D*8.6"H 2,Material:high-carbon steel construction,high density foam 3,Fire-protection SH-1003 Bed mattress1,Item size:35.4"W*74.8"D*8.6"H2,Material:high-carbon steel construction,high density foam3,Fire-protectionNormal mattress Bonnell independent,high-carbon steel construction,high density foam. SH-1003 Bed mattress,school furniture,student house furniture