Carving I must choose whether the measure of my head is 57.5 cm, I choose size M or L size
1333885
I bought a medium and a large helmet. My head measures 52 cm so I wear the medium helmet but I wish I had purchased a small. These helmets seem to run a little big. I suggest a medium. You want it to fit tight.
1333886
I returned this helmet because the visor retaining bolt broke loose. This happened twice. I wasn't about to see if third time was the charm in this case.
2135770
I used the chart and found the helmet was too small. I have a head that measures 22.5 inches and found the XL to be the right size for me.
1824478
Somewhere between a small and a medium, it is definately too small for my head so i gave it to my wife!
294746
I ride a 56cm/57cm bike, and I got the large which was perfect. Go for a large!
78901
I'd say go smaller. I was right in between M and L and went with the M which fits perfectly.
1181179
Hi the one that I bought was M/L size and its fit me perfectly. I am an adult
355738
I would guess the size and design? I purchased the M570 because it seemed more suitable for my issue with my right hand. I would just look under the description tab on each to see the differences.
28750
The M and Medium options are the same helmet. I don't know about size differences 2013/2015, but they have likely not changed anything. The M/Medium works nicely for head circumference between 22" and 23".
1641046
The sizing is in centimeters, measuring the circumference of the head. My son is 3 and the X-Small (46cm-52cm) fits him well.
84710
7cm 6cm 5cm 3.7cm. The sizes match metric sizes perfectly. Inches would be off.
669352
A size medium fits a 58 cm (22.75 inches) circumference head comfortably with or without a light hat or headband underneath. Great helmet!
399165
That is what I had to do. It is hard to know for sure but the smaller size fit me.
371400
There is a measurement scale on the website it will tell you what size you need
112350
When you select the sleeve size it gives you a measurement in cm. Measure around your elbow and select the size that fits
108373
I need to determined which size to choose from is there anywhere where I might see some details
1263816
11.5mm,12.5mm, 15mm,20mm,18mm,23mm,25mm,30mm. Choose the size yourself ,but don't support mix size.
15644
If your foot is narrow s/m should be okay. If the foot is wider the I would go M/L.