Abstract: A bangle includes first and second bangle members, each having a proximal end and a distal end. The distal end of the first bangle member is pivotally connected to the distal end of the second bangle member to permit relative movement between the first and second bangle members. A first locking member is provided at the proximal end of the first bangle member and a second locking member is provided at the proximal end of the second bangle member. The first locking member is selectively moveable between a closed position where the first locking member engages the second locking member to releasably secure the proximal end of the first bangle member to the proximal end of the second bangle member, and an open position where the first locking member is separated from the second locking member.

Abstract: A warning system to alert the rider of a vehicle such as a bicycle or motorcycle that a safety helmet is not being worn when the rider is mounted on the vehicle seat. The warning system includes a helmet holder for storing the helmet when the vehicle is not being used. A first switch is secured to the helmet holder and is adapted to be positioned so that it closes when a helmet is in the holder, and a second switch is secured to the vehicle and is adapted to be positioned so that it closes when a rider is mounted on the vehicle seat. The two switches are electrically connected in such a manner that an alerting device is energized if both switches are closed, indicating that a rider mounted on the vehicle seat is not wearing a safety helmet.