Bed mattresses for sale.. - 1 King size natural mattress, size 180cm * 200cm and height 15 cm (The king size mattress is new, as its size did not match the bed frame). - 1 Queen size spring mattress. Size 120cm * 190cm and height 20 cm - 2 Twin size spring mattresses. Size 90 cm * 190 cm and height 20 cm.