The storage box made of durable, remolded, impact resistant polyethylene material. It can keep things nice and dry and not lost. It fit most UTV ATV Front or Rear rack. The lid snaps securely when closed. You need to squeeze the side so that you can release the latch. Our box does not have a lock, so in order to prevent the lid from being opened during riding, we designed two protrusions on the edge of the box to firmly hold the lid. Why we not make a lock design? Because we found in actual tests that if the box has a lock, the lock will make noise due to impact during riding.