Giro Manifest MIPS Spherical Bike Helmet

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Enjoy a comfortable fit and confident ride with the Giro Manifest MIPS Spherical bike helmet, which features excellent ventilation, easy adjustability and both MIPS Spherical and Progressive Layering.

  • 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
    • Structural integrity is bolstered by the translucent, shatter-resistant AURA reinforcing arch that runs throughout the helmet
    • Roc Loc® Trail Air Fit System offers easy adjustability for fit and positioning, plus enhanced ventilation and a durable design that resists abrasion, scratches and UV rays
    • Moto-style screw-in visor is easy to adjust with one hand, moving up and down in indexed steps with 3 riding positions plus a high position for goggle storage above your brow
    • An integrated rubber goggle gripper on the back of the helmet helps to ensure that your goggles stay in place, even when you're getting rowdy on the trail
    • Integrated eyewear grippers help secure sunglasses
    • Antimicrobial XT2 padding provides exceptional sweat absorption; pure silver content 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 Mountain Bike Helmets
  • Technical Specs

    Best Use

    Mountain Biking

    Helmet Style

    Mountain Bike

    Helmet Construction


    Shell Material


    Head Circumference

    S: 20-21.75 inches

    M: 21.75-23.25 inches

    L: 23.25-24.75 inches






    S: 11.3 ounces

    M: 12 ounces

    L: 13 ounces



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