Fit systems for helmets

A rear support of a helmet closure system, the rear support being positionable at a rear of a helmet and being configured to engage a back of a wearer's head, the rear support comprising:

• a central frame having an upper end and a lower end, the lower end including a base member of a reel based closure device;
• a pair of arms that are attached to the central frame at the upper end of the central frame, each arm of the pair of arms including one or more guides that are configured to direct or route a tension member of the reel based closure device along a path;
• and
• attachment means that are positioned at the upper end of the central frame, the attachment means enabling the rear support to be coupled with the helmet;
• wherein:
• each arm of the pair or arms is attached to the central frame only at the upper end so that the lower end of the central frame is separated from a lower end of each arm;
• each arm of the pair of arms includes a distal end that extends away from the central frame so as to encircle a portion of the wearer's head when the helmet is being worn;
• and
• the central frame and pair of arms are formed of thin and flat polymer materials that enable the central frame and pair of arms to lie flat against and conform to the back of the wearer's head.