Helmet Lazer Bullet 2.0 + lens +led Accessory size:L deep and REM sleep stages

deep and REM sleep stages as well as Pulse Ox4 and respiration data

it provides versatility for different bike setups

Gently curved banana shape to stop slipping

The low-profile design increases road clearance for improved confidence when leaning through the turns and getting back on the gas

Helmet Lazer Bullet 2.0 + lens +led Accessory size:L deep and REM sleep stagesThe Bullet 2. 0 helmet provides an answer to the age old dilemma of ventilation versus aerodynamics. With its narrow shape and closed shell it is a seriously aerodynamic helmet but a quick adjustment to the Airslide system turns it into a helmet with sufficient ventilation to tackle climbs on hot days. With its adjustability the Bullet 2. 0 is a road racing helmet for everyday, but one that packs serious aerodynamic performance. When ventilation is