Provided is a helmet that can demonstrate sufficient shock-absorption capacity at a suitable location while achieving high air permeability and heat dissipation. Legs (7) of a hammock (4) are provided with suspended parts (10, 14) that are positioned further to a vertex side than a headband (5) and that span an interval that is formed between at least two of the legs (7). The suspended parts (10, 14) are provided with shock-absorption parts (11, 15) that absorb shock from the outside of a hat body (2).