New
Bike




New
Bike
Merit Spherical Helmet
Item No.
37648-034-S
€ 219,95
Colour — Matte Blue
Size
Size Chart
Please select a size.
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The Merit Spherical is a high-performance trail-riding helmet built around the ball-and-socket design of Spherical Technology to provide amazing ventilation, deep coverage, and luxurious comfort.
The power of cool. The Merit Spherical is the ideal choice for fast, flowy trail riding and hard pedaling. With Spherical Technology, it offers more comprehensive performance and protection with the combination of a Mips® brain protection system to redirect rotational impact energy. Plus, separate inner and outer liners featuring Progressive Layering help manage high- and low-speed impacts. Massive Wind Tunnel vents are combined with channels in the EPS foam liner, creating amazing airflow through the helmet to exhaust heat out, even on long, hot climbs. Fit and stability adjustments are fast and easy with the Roc Loc® Trail Air fit system, and plush Ionic+ padding provides exceptional sweat absorption while combating odor with permanent antimicrobial performance.
- Spherical Technology's Ball‐and‐Socket design, powered by Mips®, helps redirect impact forces away from the brain by allowing the outer liner to rotate around the inner liner during a crash. It also eliminates contact with hard plastic or slip‐planes against the skin.
- All Giro helmets are designed to reduce as much energy as possible while meeting and exceeding stringent safety standards. The goal of Giro's Mips‐equipped helmets is to reduce rotational forces. Giro believes that helmets equipped with this technology can reduce the amount of rotational force that may be transferred to rider's brain in certain impacts.
- Giro helmets with Progressive Layering™ use two different density EPS foam liners to address high‐ and low‐speed impacts for more comprehensive energy management.
- The two‐piece shell combines a tough outer hard shell with a polycarbonate lower shell permanently fused to the liner for durability without excess weight.
- This revolutionary fit system adds a new dimension to helmet performance by enhancing cooling, as well as fit comfort and stability. Using a patented design that suspends the helmet just slightly off the top of the skull, Roc Loc Air allows cool airflow to pass directly over your head, further enhancing the performance of vents and internal channeling that exhaust heat out of the helmet. Fit and feel adjustments mimic the Roc Loc 5, allowing you to easily custom tune fit tension and fore‐aft tilt of the helmet in seconds using a single hand.
- Giro helmets are developed utilizing our proprietary Wind Tunnel ventilation system. This elaborate design combines active vents in the helmet's shell with exhaust channels inside the helmet that thrust fresh, cool air over and around the rider's head while forcing heat and stale air out. It's the most effective cooling system available, and a difference you can feel every time you ride.
- Integrated eyewear grippers help secure sunglasses.
- This visor features an adjustment mechanism that lets you move the visor up and down in indexed steps. These steps include three riding positions plus a high position for goggle storage above your brow. The design allows you to easily adjust your visor with one hand while riding.
- The integrated rubber goggle gripper on the back of the helmet helps to ensure that goggles stay in place even when you're getting rowdy on the trail.
- Pure Silver is the secret ingredient that gives IONIC+® the power to provide natural, permanent odor protection to keep your helmet feeling fresh.
CE EN 1078
34% EPS, 10% EPP, 22% PC, 22% Nylon, 4% Polyester, 3% POM, 3% PU, 1% Silicone, 1% Fiber Glass


Size Charts
These size charts and conversions are meant to serve as a guide. We recommend you try-on before riding to ensure full comfort and performance.
Bike Helmet Size Guide
How to measure your size – Wrap a measuring tape around your head, keeping the tape level from front to back. Note the measurement and reference the Size Guide. Note: Make sure the helmet fits with a little room when the fit system is loose, and sits low enough to protect your forehead without hindering your vision. Once you’ve got the right size, you can adjust the fit.

Adult Size | Circumference |
---|---|
S | 51 - 55 cm |
M | 55 - 59 cm |
L | 59 - 63 cm |
XL | 61 - 65 cm |