Alk13 Protection Size Guide

Sizes Head Circumference
Small 51-53cm
20-21 in
Medium 54-56cm
21-22 in
Large 57-59cm
22-23 in
3-Pack Protection Set
Sizes Recommended User Age
XS (green) Up to 10 years
S (blue) 10-12 years
M (red) 13-15 years
L (brown) 16-99 years
Knee Pads
Sizes Recommended User Age
S-M Up to 15 years
L-XL 15-99 years
Hip Pads
Sizes Recommended Age Recommended Weight
S Up to 12 years 20-40kg
M 12-15 years 40-75kg
L 16-99 years 75-100kg

How to Measure

Follow the instructions below and compare your measurements with the size chart

Head Circumference

Measure the head circumference just above your ears and eyebrows. The helmet should sit low, level on your head and it should not be tilted.

Tip! Use a soft measuring tape, to ensure that the product fits properly. Alternatively, use a piece of string and then measure it against a ruler

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