The OneK helmet is available in 3 different shell sizes (0 - 2). By combining the shells with a liner in any size, available in XXS - L in a round model, you can achieve a perfect fit.
The MIPS liner is antibacterially treated in a material that is quick-drying, moisture-transporting and washable.
The liner is also very good if, for example, you share a helmet with others.
Many people buy two liners, either 2 in the same size so there is always a clean and dry liner when the other liner is washed or you want to be able to change the size of the helmet for different reasons.
The OneK helmets are available in three different shell sizes:
Shell size 0 (51-54cm) fits liner XXS, XS and S
Shell size 1 (55-56) fits liner M
Shell size 2 (57-60) fits liner L and XL