What Our Gearhead® Experts Are Saying: “The Aries is hands-down the best helmet I’ve ever used—crazy light, super airy, and it disappears on your head. The MIPS Spherical setup gives you top-tier protection without that bulky feel, and it actually keeps you cooler than most ventilated lids.” For long climbs, fast crits, and everything in between, the Giro Aries Spherical Helmet delivers unmatched protection and comfort in a featherlight design. Its dual-layer MIPS Spherical technology separates two EPS liners to better manage rotational and direct impacts, giving us confidence that we’re protected no matter how hard we push. Twenty-four massive vents and deep internal channels funnel air across the scalp to keep us cool during high-output efforts, while the Roc Loc 5+ Air system fine-tunes fit for next-to-skin stability. The Aura Reinforcement Arch bolsters structural integrity without adding bulk, and an extra-grippy sunglasses port keeps eyewear secure through rough descents. Engineered for the world’s fastest riders yet tuned for everyday racers, the Aries is protection without compromise.