The Square jet is made out of a combination of high quality polymers that provide very effective impact performance. It has one shell size (XS-XL) and weight of less than a kilo.
The screen of the Square helmet is made of anti-scratch material in optical polycarbonate and has a quick release mechanism.
The warm breeze blowing into your face on a summer evening ride is all the ventilation this jet requires.
The interior padding is made of anti-allergenic fabrics though they are not removable.