SLIDABLY STORABLE HELMET

PROBLEM TO BE SOLVED: To provide a slidably storable helmet having improved strength at the connection part of a front cap body and a back cap body to enhance the strength.SOLUTION: The slidably storable helmet has the front cap body 12 covering the front part of the head of a user, and the back cap body 13 capable of being slidably stored in the inside of the front cap body and covering the back part of the head of the wearer. Sliding guide members 14 having arc-shaped slots 14a formed therein are installed in both of the right and left sides of the inner surface of the front cap body 12. Engaging shafts 15 slidably moving along the arc-shaped slots by engaging with the arc-shaped slots are installed in both of the right and left sides of the inner surface of the back cap body 13. The stored state of the back cap body stored in the inside of the front cap body, and the using state of the back cap body extended from the front cap body are switched by sliding the engaging shaft along the arc-shaped slots.