Abstract: A bicycle helmet with an improved retention system uses an adjustable headband and straps to secure the helmet to the user's head. The headband is adjustably angled in relation to the helmet such when the helmet is worn in the proper position with the bottom edge of the helmet situated approximately horizontally, the angled headband fits comfortably and securely around the user's head. The headband and strap adjustability provides comfort, stability and air circulation to the wearer during cycling and secure protection to the head during an impact. The headband attaches securely to the helmet and in the case of an impact would evenly distribute the force of the impact over a larger area of the head decreasing the chances of serious injury. The system may be retrofitted to the user's current helmet. The retention system is also removable so that the system may be washed or replaced.