Mi Commuter Helmet User Manual
This version is for private use only and should not be distributed.
Mi Commuter Helmet User Manual
This version is for private use only and should not be distributed.
Read this manual carefully before use, and retain it for future reference.
1. Product Overview
3M Reflective
Sticker
Strap Pad
Locking
Buckle
Woven Strap
Adjustable
Buckle
Foam Lining
(Removable)
Adjustment
Wheel
2. Size Selection & Measurement
Helmet Measurement Method
Because the helmets are different in size, you need to choose the size that suits you. Aer measuring your
head circumference, you can select the right helmet size according to the circumference. If the helmet is too
loose or too tight, you can adjust it by turning the adjustment wheel until it is comfortable to wear, or try a
different size helmet.
Helmet
Head CircumferenceSize
52 - 55 cmS
M
Head Width
≤16.5 cm
≤17.4 cm55 - 58 cm
Head Circumference Measurement
Hairline
Occipital
Bone
The head circumference needs to be measured twice to get the maximum
value. The first measure, by using a so measuring tape, is around the
hairline to the point that 2 cm (about 0.8 in) below the occipital bone. The
second measure is around the brow bone to the occipital bone.
Note: Due to different head shapes, the helmet may not match your head completely. If you feel uncomfortable
while wearing it, please select a different size.
Brow Bone
Head Width Measurement
Head Width
Occipital
Bone
01
This version is for private use only and should not be distributed.
3. Wearing Method
a. When wearing the helmet, the front of the helmet should be level with the back, parallel to the ground. It
cannot provide enough protection if you wear the helmet in the wrong way.
Correct Wrong
b. You can loosen or tighten the helmet with the adjustment wheel. Turn the wheel clockwise to tighten the
helmet, and counterclockwise to loosen the helmet.
Turn the adjustment
wheel clockwise to
tighten the helmet.
c. Adjust the position of the adjustable buckle to make sure it is below the ear and the locking buckle is
fastened.
d. Check the woven strap to make sure it is well-positioned below the chin.
Turn the adjustment
wheel counterclockwise
to loosen the helmet.
02
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