Bike Helmet

A simple bike helmet designed for city cycling. The design is inspired by a duck's beak on the front, while the back is designed accordingly with the shape of the head. The protection is concentrated around the sides and the frontal parts of the helmet, where the possibility of an impact is the highest. The plastic is made out of ABS plastic, which has the highest impact resistance and the inside is filled with polypropylene foam to insure minimal cranium damage. In order to adjust the size of the helmet, an internal mechanism is placed that regulates the head diameter, and the distance from the neck to the helmet. 
Exploded view of the components
The helmet position
Isometric view
The plastic mold