The Giro Atmos road bike helmet is the OG of the ultra-light helmet category. Even though Giro has some newer models out there, many Pro Tour riders still reach for the Atmos because of its proven, dependable, lightweight design. You get the same Roc Loc 5 suspension found in the Aeon, plus 26 molded vents and the innovative Roll Cage reinforcement that helps the helmet maintain its shape to protect your head during a crash.
Lightweight design clocks in at just 269 grams
26 enormous, sculpted vents pull in tons of cooling, fresh air to keep your dome comfortable
Roc Loc 5 fitting system provides a wrap-around harness for a comfortable, easy-to-adjust fit
In-Mold technology fuses the liner with the shell to create a helmet that's light and strong
Roll Cage reinforcement provides extra reinforcement and integrity in the case of a crash with virtually no added weight
Ideal for road, XC or AM riding
Giro Atmos Road Helmet
Roc Loc 5
Small 20-21.75", Medium 21.75-23.25", Large 23.25-24.75"