Metal Steel Slat The steel bed frame features providing solid support for the mattress as well as even body distribution for a restful nights sleep. Enough Storage Space 12.7" storage space under the frame, offer more space for you to storage anything. Protective Footpads Protective pad on the bottom of the feet to prevent scratching the floors. Tips:· Do not tighten screws until fully assembled the bed.· Check all screws or bolts of the beds are tightened and inspect regularly.· Make sure the legs of the bed frames remain in contact with the ground.