Macedonians used leather helmets?

[Giannis K. Hoplite]

In one famous macedonian grave(that i shamefully can't remeber which one specifically is) there is that fresco of soldier wearing a linothorax(with pink shoulder ans upper chest covers and a medusa head in the front),a blue chiton,a red cloak wrapped around his waist,holding a spear(who's lenght is not depicted full,so it could be a sarissa?) and long boots.
Khairete
Giannis