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Ideal for road and gravel adventures, the Giro Helios MIPS Spherical bike helmet offers excellent ventilation and adjustable fit, plus MIPS Spherical and Progressive Layering for a confident ride.

  • Features

    • Rotational motion can cause brain injuries; with MIPS Spherical, 2 layers of EPS foam rotate independently—like a ball and socket joint—redirecting forces during impact
    • Progressive Layering provides dual-density foam liners designed to address high- and low-speed impacts for more comprehensive energy management
    • Internal channeling and 15 Wind Tunnel vents force air to flow over your scalp, providing remarkable cooling power
    • Roc Loc® 5 Air fit system allows you to easily custom tune fit, tension and fore-aft tilt in seconds using a single hand
    • In addition, the Roc Loc 5 Air fit system enhances cooling with a patented design that suspends the helmet just slightly off the top of your head, improving airflow
    • Antimicrobial XT2 padding provides exceptional sweat absorption; pure silver IONIC+® technology offers natural permanent odor protection to help keep your helmet feeling fresh


    To find your size, position a tape measure just above your ears and about 1 in. above your eyebrows. Keep the tape level to measure the circumference around the largest part of your head and then find the corresponding size in the Technical specs info.
    View all Giro Road Bike Helmets
  • Technical Specs

    Best Use

    Road Cycling

    Helmet Style

    Road Bike

    Helmet Construction


    Shell Material


    Head Circumference

    S: 20-21.75 inches

    M: 21.75-23.25 inches






    S: 8.8 ounces

    M: 9.5 ounces



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