The Helium is a light weight helmet from Alk13 - Only 280 gr. It has an extremely low profile thanks to the popular "in-mould" technology. The use of the in-mold production offers you the same level of protection but with a much lower thickness.
It comes with two different sizes of padding so the size can be adjusted for a perfect fit.
- S - M = 52-55 cm
- L - XL = 56-59 cm