Giro helmets – Where functionality meets lifestyle

Founded in a California garage in 1985, Giro continues to shape the helmet market today. The brand has driven the development of modern bike helmets – lightweight, well-ventilated, and built for aerodynamic performance. With advanced protection systems like MIPS Spherical, designed to reduce rotational forces on impact, Giro develops helmets for every discipline: from aerodynamic road helmets to versatile gravel and MTB models, as well as urban and kids’ helmets. In the WorldTour peloton, teams like Visma | Lease a Bike rely on Giro. In freeride, athletes like Kurt Sorge, Carson Storch, and Talus Turk wear Giro helmets at some of the toughest events in the sport – and their feedback feeds directly into product development. Find the right Giro helmet for your discipline.

Giro’s story begins in the mid-1980s in California, when industrial designer and passionate cyclist Jim Gentes set out to rethink the bike helmet. His Giro Prolight was lighter, better ventilated, and more comfortable than anything on the market at the time. To refine aerodynamics, Gentes worked with NASA engineers. Just four years later, Greg LeMond rode a Giro time trial helmet to his legendary Tour de France victory by eight seconds. Since then, Giro has continued to push innovation forward – from the Roc Loc fit system to the modular full-face helmet Switchblade and Spherical Technology. That same drive to innovate still defines Giro today.

Giro doesn’t build off-the-shelf helmets – here’s what makes them stand out:

• DOME test lab: Developed and tested in realistic conditions
• Super Fit Engineering: Up to four shell sizes per model for a precise fit
• Rotational protection without sacrificing ventilation: thanks to MIPS Spherical Technology
• Top ratings: Consistently high scores in independent tests like the Virginia Tech Helmet Rating

Giro cycling helmets combine protection and comfort in every ride. All models are designed as unisex and feature intuitive adjustment systems for a secure, comfortable fit. Thoughtful fit systems make it easy to wear your helmet comfortably, even with tied-up hair. Road helmets focus on low weight and aerodynamic profiles, while MTB models offer deeper coverage and reinforced lower edges. Most Giro bicycle helmets use in-mold construction, permanently bonding the polycarbonate outer shell to the EPS foam core. The result: reliable protection in a helmet that still feels impressively lightweight.

Choose your Giro helmet category:

• Giro road helmets – aerodynamic and lightweight for road and gravel riding
• Giro MTB helmets – deeper coverage and in-mold hardbody construction, from trail to Enduro World Series and downhill
• Giro kids’ helmets – lightweight fit, MIPS protection, and bold designs for young riders

Giro develops helmet technologies that go beyond traditional impact absorption. A key focus is protection from rotational forces – a critical factor in angled impacts. Different material densities and multi-layer constructions help absorb impact energy more effectively and redirect critical forces away from your head. Reinforcing elements like AURA II Arch reinforcements increase structural stability without adding noticeable weight. Before any technology goes into production, Giro tests it in its in-house DOME lab under real-life conditions – so you can rely on performance that holds up when it matters most.

Spherical Technology powered by MIPS takes helmet protection further. Two separate foam shells – EPS on the outside, EPP on the inside – are connected like a ball-and-socket joint. The outer shell can move independently of the inner shell, helping redirect rotational forces during an impact. Because no additional plastic slip layer is needed, the design stays compact while maintaining excellent ventilation and low weight. Giro helmets with Spherical Technology regularly achieve 5-star ratings in the Virginia Tech Helmet Rating.

Giro’s Wind Tunnel ventilation combines large intake vents with internal channels and exhaust ports to create continuous airflow through the helmet. This helps dissipate heat efficiently and keeps your head cool, even during intense efforts. The system is designed to balance ventilation and aerodynamics and is used across many road and MTB helmets.

Giro’s ROC LOC fit systems are designed for precise, reliable adjustment. The ROC LOC 5 Air system combines a secure fit with improved airflow at the back of the head and can be fine-tuned using a dial. For off-road use, the ROC LOC Air DH version helps prevent accidental adjustment caused by neck braces or backpacks, keeping your helmet securely in place on demanding rides.

IONIC+ padding uses silver-based technology to inhibit odor-causing bacteria. Integrated silver ions provide antibacterial protection and long-lasting freshness. Unlike conventional treatments, the effect remains effective even with regular use, helping keep your helmet pads fresh and hygienic over time.

Super Fit Engineering is Giro’s proprietary sizing system, developed through extensive analysis of head shapes. Instead of relying on a few standard sizes, it offers finely tuned fit options for greater precision. Combined with ROC LOC fit systems, it delivers a secure, adjustable fit that enhances both comfort and stability on every ride.

With Giro helmets, you can rely on protection when it matters most. That same commitment has defined the brand for nearly four decades – and it’s why you’ll find the full Giro helmet lineup in one place at BIKE24. Whether you’re choosing your first road helmet, upgrading to Spherical Technology, or looking for a kids’ helmet, you’ll find a wide selection of in-stock models ready to ship. Our team of experienced cyclists will help you choose the right helmet. With fast shipping, great prices, and free returns, you can try multiple models at home and send back what doesn’t fit.

Discover Giro helmets at BIKE24 and find the right model for your riding style.

Found the right Giro helmet? Take a look at the rest of the lineup. Giro also develops matching cycling shoes, apparel, gloves, goggles, and more. All products are designed to work together, giving you a cohesive, high-performance setup for your rides. Discover the Giro range now and save time and shipping costs.