Dynam Adult Helmet
This item cannot be shipped to California.
Color:
Size What's my size?
We offer free shipping* and professional assembly on all bike orders. Cannondale bikes ship to an Authorized retailer of your choice, where they’ll be built and ready to ride when you pick them up. Most orders are ready for pickup in approximately ~10 business days. Bikes and frames are not eligible for home delivery.
Find in StoreNeed it sooner? Check availability at a nearby Authorized Cannondale retailer and purchase directly from local inventory—some models may be available the same day.
Ships to YouAccessories, components, and gear ship directly to your address. Most orders arrive within 5–7 business days. We offer free standard shipping on orders over $49, and accessories included with a bike order also ship for free.
Ordering a bike and accessories?
Your bike will ship to your selected retailer for pickup, while your accessories will be delivered to your address. Orders will ship separately.
*Free shipping applies to the contiguous United States. Additional charges may apply for Alaska and Hawaii.
More Shipping and Pickup Information
Play It Cool
Features
PolyRail Structure
The PolyRail system doesn’t just give your helmet a distinct look. It also reduces weight, reinforces the structure, and amplifies our IntelliVent air-flow system, making it a better helmet all around.
FrameLock Gripper
The FrameLock eyewear grippers on the front vents of Dynam make sure your glasses stay in place when stored on a ride.
ErgoFit+ Dial
Those last few millimeters matter. The overmolded ErgoFit+ adjustment system means you can precisely dial in the perfect fit, with micro-adjustability of the diameter of the helmet’s 360 degree retention harness.
BioMap Fit
Born from understanding that no two heads are alike, BioMap Fit was developed to ensure proper fit on nearly any dome. We designed special shaping and coverage so that our helmets feel and fit like no other, and sizing is consistent across the range.
Fidlock Closure
Once you try Fidlock, you’ll never want to own a helmet without it. No more fussing with traditional tiny clips. The Fidlock closure system uses magnets to click the clips into place, and then it pops open only when rotated in a specific way.
Smart Construction
It’s called in-mold construction, and it bonds the polycarbonate outer and foam inner layers of the helmet into one solid piece. It’s how all Cannondale helmets are made. What’s that mean? A stronger, smarter, lighter helmet.
Remove, Wash, Repeat
Don't worry about sweating too much. The removable pads can be taken out for drying, washing, or replacing if you want to start fresh.
