List the advantages and disadvantages of using a frame structure as a helmet?

One advantage of using a frame structure as a helmet is that it can provide strong support and protection due to its rigid design. Another advantage is that frame structures can be lightweight, which can reduce strain on the wearer's neck and head. However, a disadvantage of using a frame structure as a helmet is that it may not provide as much impact absorption as other helmet designs, potentially leading to greater risk of head injury in high-impact situations.