Colnels Ventilated MTB Helmet, 360-Degree Adjustable Fit, L-XL

Molded in one piece from an EPS-and-PC shell, the Colnels helmet is built to take the small knocks and vibration of the trail without adding bulk on your head. More than twenty vents run front to back through the shell, so air keeps moving across your scalp whether you are grinding up a fire road, holding a steady pace on pavement, or just running errands on two wheels. It comes in white, black, or golden yellow, with sizing that runs from a size L through a roomier XL, and the whole shell weighs in at well under half a pound — light enough that you stop noticing it is there after the first few minutes.

Features

• One-piece EPS plus PC shell — a single molded construction that keeps the outer shell and impact-absorbing foam bonded as one unit, rather than pieced together from separate parts.
• Twenty-plus air vents — channels run front to back through the shell to pull air across your head, so heat has somewhere to go on longer climbs or warm afternoons.
• 360-degree fit dial — a one-hand adjustment wheel tightens or loosens the internal cradle so you can fine-tune the fit on the move, without taking the helmet off.

Comfort and fit

Two washable pads — a chin pad and an inner comfort pad — sit against the parts of your head and jaw that touch the shell most, and both lift out for a quick rinse when they start to smell like a long ride. Head circumference is the number that matters for sizing: the L fits 22.8"–24.4" (58–62 cm) and the XL fits 23.6"–25.2" (60–64 cm), so if you land near the middle of either range, the XL leaves a little extra room for a thin liner in cold weather, while the L sits a touch snugger for a closer feel.

Built for year-round riding

The shell is rated for mountain biking, road cycling, and general outdoor riding across all four seasons, so one helmet covers a spring commute, a summer trail ride, and a crisp autumn loop alike. It is unisex, sized for men and women, and built to the GB standard used for this product category. Between the ventilation and the lightweight shell, it is just as comfortable parked on a café patio between rides as it is climbing a switchback.

Available sizes

Available colors

White, black, or golden yellow — pick whichever suits your bike or your kit, since all three share the same shell, vents, and fit system.

Specifications

Any questions on sizing or fit before you order, reach us at Support@fioriscas.com and we will help you pick between the L and the XL based on your head measurement.

Frequently asked questions

Which size should I pick?
Measure your head circumference: the L covers 58–62 cm (22.8"–24.4") and the XL covers 60–64 cm (23.6"–25.2"). If you land in the overlap, the XL gives you a bit more room for a liner.

Is it just for mountain biking?
No — it is built for road cycling, mountain biking, and general outdoor riding, and rated to be worn across all four seasons.

Can the padding be washed?
Yes, both the chin pad and the inner comfort pad lift out and are washable, so you can keep them fresh between rides.

Does the fit adjust without tools?
Yes, the 360-degree dial at the back turns with one hand to tighten or loosen the fit on the go, no wrench or screwdriver needed.

Will it work for both men and women?
Yes, the sizing and shell design are unisex, so fit comes down to head circumference rather than gender.

Every order ships free with no minimum, and you have 30 days to send it back if the fit is not right. Real human support is here at Support@fioriscas.com.