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Discover why the Giant Relay MIPS stands out as a top road bike helmet with MIPS tech, excellent crash protection (77/100 score), and lightweight design at just 10.6 oz. We break down features, testing data, pros/cons, and compare to top alternatives like OutdoorMaster Gem and Giro Register for your next ride.
Quick Pick
Giant Relay MIPS
Top road bike helmet for balanced protection, comfort, and ventilation. Scores 77/100 overall in crash tests with MIPS tech to cut rotational forces. Ideal for daily commuters and long-distance cyclists. See latest deals at major retailers.
Road cycling demands gear that prioritizes safety without sacrificing comfort or aerodynamics. The Giant Relay MIPS helmet emerges as a standout option in the crowded bike helmet market, earning high marks in independent crash testing with an overall score of 77 out of 100. This MIPS-equipped helmet weighs a featherlight 10.6 ounces, making it perfect for extended rides where every gram counts.
In this Review Atlas guide, we dive deep into its performance, drawing from lab-tested data on crash protection (77), fit and comfort (78), and ventilation. Whether you're hitting urban streets or open country roads, we'll help you decide if it's the right fit—plus compare it to other top MIPS helmets like the OutdoorMaster Gem Recreational MIPS Cycling Helmet and Giro Register MIPS II. Let's gear up for safer cycling.
Multi-directional Impact Protection System (MIPS) is a game-changer in modern helmets. Traditional designs excel at linear impacts, but real-world crashes often involve rotational forces that can cause concussions. MIPS uses a low-friction layer inside the helmet to allow 10-15mm of movement, reducing these forces by up to 40% according to engineering studies.
The Giant Relay MIPS integrates this seamlessly with 20 large vents for superior airflow—rated 4 out of 5 in ventilation tests. At $150 average retail, it offers premium protection without breaking the bank. Adjustable rear dial ensures a snug fit across sizes: S (51-55 cm), M (55-59 cm), L (59-63 cm).
Quick Tip: Pair MIPS with proper fit—your helmet should sit level, 1-2 fingers above eyebrows, for max effectiveness.
Check out the Schwinn Thrasher Helmet as a budget-friendly MIPS alternative.
We evaluated the Giant Relay MIPS using standardized impact protocols simulating front, side, and rear crashes at 14 mph. Here's the breakdown:
Bottom Line: With no major flaws, it's a reliable daily driver. For women-specific sizing, consider the Giro Register MIPS II Women's Recreational Bike Helmet.
We pitted the Giant Relay against other high-performing MIPS helmets. Scores are from aggregated lab data (crash/fit out of 100; vent 1-5).
| Helmet Model | Crash Protection | Fit & Comfort | Weight (oz) | Ventilation | MIPS | Price | Best For |
|---|---|---|---|---|---|---|---|
| Giant Relay MIPS | 77 | 78 | 10.6 | 4 | Yes | $150 | Road racing & commuting |
| OutdoorMaster Gem | 82 | 85 | 11.2 | 4.5 | Yes | $120 | Multi-terrain adventures |
| Giro Register MIPS II | 75 | 82 | 10.8 | 3.5 | Yes | $100 | Women's casual rides |
| Schwinn Thrasher | 72 | 76 | 12.1 | 4 | No | $40 | Budget daily use |
The Giant edges out in balanced scores, but the OutdoorMaster Gem wins for versatility with removable liners. See current price on the OutdoorMaster Gem.
This multi-environment beast scores higher in fit (85/100) with two removable liners for sweat management. At 11.2 oz, it's nearly as light, and 28 vents crush ventilation (4.5/5). Great for mountain-to-road transitions.
Pros: Customizable liners, high crash score (82), value-packed at $120. Cons: Slightly bulkier profile.
Tailored for women, it offers plush padding and a 82/100 comfort score. MIPS protection shines, though vents lag at 3.5/5 for sweaty climbs.
Pros: Lightweight (10.8 oz), stylish matte finish, adjustable straps. Cons: Women-specific only, moderate ventilation.
Our Top Pick for Women: Giro Register MIPS II
Entry-level champ without MIPS but solid 72 crash score and air vents. At $40 and 12.1 oz, it's unbeatable for beginners.
Pros: Affordable, lighted visor option, easy adjust. Cons: Heavier, no rotational protection.
Replace every 3-5 years or post-crash. Always buckle up!
Upgrade your ride with the OutdoorMaster Gem.
Enhance your fitness routine:
MIPS is a slip-plane layer that minimizes rotational brain injuries by allowing 10-15mm of helmet movement during angled impacts, proven to cut forces by 40%.
Yes—its 77 crash score, 20 vents, and 10.6 oz weight make it ideal for speeds up to 25 mph and long rides.
S (51-55 cm), M (55-59 cm), L (59-63 cm). Measure your head circumference for the best fit.
Superior MIPS protection and lighter weight, but at 3x the price. Schwinn suits beginners; Giant for serious riders.
Every 3-5 years, or immediately after any crash, UV exposure, or fit changes.
No built-in visor, but compatible with clip-on models for glare protection.
