1.waterproof cloth cover
2.inner high density sponge
3.cover can be open with zip
4.fit for flat bed base board
mattress

mattress for double cranks hospital bed:

1.waterproof cloth cover
2.inner high density sponge
3.cover can be open with zip
4.fit for flat bed base board

5.4 parts, for back up &down bed

6.the thickness of mattress can as buyer's request.