Bern Macon 2.0 Fit and Use for Canicross, Bikejor and Scooter

Start with a real head measurement, not a hat size guess

The Macon 2.0 is Bern's skate-inspired hard-shell helmet, and the supplied sizing chart gives you a clear way to choose a size before you add dog-powered speed to the equation. Use a cloth tape measure or a piece of string around your head just above your eyebrows and ears. The number you get is your normal helmet size.

The supplied chart lists Small at 6 1/2 to 7 hat size, Medium at 7 to 7 3/8, and Large at 7 3/8 to 7 7/8. The centimeter ranges in the same chart are 52 to 55.5, 55.5 to 59, and 59 to 62. Keep those numbers in centimeters as printed; do not convert them to other units and then round again. If you land exactly on a boundary, the chart overlaps, so your preference decides: Bern notes that you may choose a slightly larger or smaller size depending on fit preference, and that a tighter fit can mean going one size smaller. The helmet linings do compress, so a slightly tight helmet will loosen a bit.

Fit the Macon 2.0 before you clip into a dog line

Do this at home, without a dog attached, so you can focus on the helmet rather than the leash.

1. Measure and choose your size: Measure around your head just above your eyebrows and ears, then match the result to the supplied Small, Medium or Large range. If you are between sizes or on an overlap, decide whether you want the tighter or roomier option before ordering.
2. Set the Compass Fit system: The Macon 2.0 uses Bern's Compass Fit system. Adjust it so the helmet sits level and stays put when you turn your head. The supplied record does not include a step-by-step dial procedure, so follow the fit system as it arrives rather than forcing a setting.
3. Check the lay-flat adjustable straps: The helmet has lay-flat adjustable straps. With the helmet on, adjust them so the helmet does not shift forward over your eyes or backward off your forehead. The supplied record does not specify a strap length or angle, so use a stable, comfortable position rather than a measured target.
4. Choose the seasonal knit: Winter and summer knits are included. Pick the one that matches the session and recheck the fit after swapping, because a different knit can change how the helmet sits.
5. Do a final check with your dog gear on: Put on your belt, line and any other dog-powered gear, then recheck that the helmet still sits level and the straps are snug. The Macon 2.0 weighs 450g, so confirm the weight feels balanced before you start moving.

Macon 2.0 details that affect fit and use

• Bern Helmet Macon 2.0: Available in Small, Medium or Large, with a supplied chart using hat sizes and centimeter ranges. This is the primary fit decision for canicross, bikejor, scooter and skijoring. Measure first and use the overlap ranges to choose tighter or roomier.

  

• Bern Helmet Macon 2.0: Weight: 450g. A known weight helps you judge whether the helmet feels balanced during fast dog-powered sessions, especially when you are also handling a line.
• Bern Helmet Macon 2.0: Complies with the CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older. This is the supplied safety standard for the helmet. It is a bicycle helmet standard, so treat it as the stated certification rather than an assumption about every dog-powered discipline.
• Bern Helmet Macon 2.0: Construction: ThinShell; fit system: Compass Fit; vents: 12. These are the supplied build and adjustment features you will actually use when setting up the helmet for active sessions.
• Bern Helmet Macon 2.0: Winter and summer knits included; compression molded padding; lay-flat adjustable straps. The included knits and padding affect how the helmet fits, so recheck the fit after changing them.

Match the helmet to the dog-powered session you actually do

Canicross, bikejor, dog scooter and skijoring put different demands on a helmet, but the supplied record does not include discipline-specific testing or instructions. What it does give you is a CPSC bicycle helmet standard, a 450g weight, 12 vents, a Compass Fit system and lay-flat adjustable straps. Use those facts to make a practical choice rather than assuming the helmet is certified for every sport.

For canicross and bikejor, the main fit question is whether the helmet stays level when you look ahead and turn your head while a line is under tension. For dog scooter and skijoring, the same check applies, but the faster pace makes a stable fit more important. If your sport has its own helmet rules, check those rules separately; the supplied information does not confirm compliance with every sanctioning body.

Tighter or roomier: use the overlap deliberately

The supplied size chart overlaps at the boundaries, so the same head measurement can fall into two sizes. Bern's own guidance says you may select a slightly larger or smaller size depending on personal preference, and that a tighter fit can mean one size smaller. The linings do compress, so a slightly tight helmet will loosen a bit.

• Choose the smaller size when: You prefer a tighter fit and your measurement sits in an overlap range. Recheck after the padding compresses.
• Choose the larger size when: You want more room or plan to wear the included seasonal knit in a way that changes the fit. Recheck the straps and Compass Fit after the swap.

What the supplied information does not tell you

The supplied record does not include care instructions, replacement schedules, or a step-by-step procedure for the Compass Fit dial. It also does not confirm compatibility with every dog-powered sport or every seasonal upgrade. Treat those as open questions rather than assuming a feature or instruction exists. When you need those details, check the manufacturer's documentation for the Macon 2.0 rather than inventing a routine.

The Macon 2.0 is listed at USD 50.00 with a catalog comparison price of USD 100.00. That price is useful context, but fit and the supplied safety standard matter more than the discount when you are choosing a helmet for fast dog-powered sessions.