GPA Riding Helmet 4S Speed Air Hybrid

• like every GPA helmet, the 4S has been designed with maximum protection in mind
• the 4S is a technological revolution with its 4 layers that allow optimal shock absorption and better resistance to lateral compression
• unrivalled shock absorption
• the outer shell made of absorbent polymer absorbs a first part of the impact through deformation
• the 2nd layer absorbs and absorbs the energy of the impact
• the 3rd layer of glass fibre ensures the rigidity of the entire helmet to prevent lateral compression
• the 4th layer is the polystyrene shell, which completes the deceleration of the impact by crushing under the impact, thus protecting the cranial box from skull injuries
• thanks to its numerous front and side openings and its rear extractors, this helmet offers maximum ventilation
• the new one-piece and removable liner can be washed and replaced if necessary. The soft and fluffy interior is antibacterial treated
• the classic chin strap is replaced by a hybrid system
• the rear part of the chinstrap, which is located between the Twin Lock system and the traditional chinstrap, is made of thermoplastic resin and integrated glass fibre fabric
• the nylon fastening straps covered with synthetic leather are closed with a two-piece buckle
• thanks to its rigid part on the back, which extends the shell, the hybrid chin strap offers greater protection and better retention of the helmet on the head