Original from the Swedish Defense.
Wear a snow jacket/anorak (can also occur m34) also called skier's blouse or wind blouse in cotton with buttoning at the neck.
Hood with drawstring (may also have a hidden drawstring/cord at the waist).
The color shade can vary slightly between light, light yellow and a more grayish tone.
Two front pockets.
Sizes are marked as 1, 2, 3, and C50 or C54.
Stamps may be present, different brands.
Buttons can vary in different materials (lead/plastic/bakelite).
Used or pre-owned in good condition.
The used ones may have stains, dirt, defects/repairs and are generally more used.
The used ones in good condition are less used, nicer and have less signs of wear etc.
Size guide
