They're made from a cotton canvas material

it's a lovely

Price reflects this but the jumper is certainly ready for more use

So those got swapped to brown marble buttons instead and it has served very well ever since

Austrian Army M65 Green Alpine Jacket - Medium 88-92 Finnish They're made from a cottonAt a glance Wind Resistant Cotton Blend Material 4 Popper Button Pockets, 2 Interior Zipper Pockets Button & Zipper Closure Secreted Collar Hood Interior Torso & Waist Drawstrings Button Adjustable Cuffs Heavy Duty & Hard Wearing Styled like US M65 Jackets Unique Green Blue Colour Chest Size: 42" Suggested Size: Medium Slim Label states chest from 88 92cm Sleeve Length: 25" Regular Collar to Hem: 32" Vintage Militaria Dated 1981 Genuine Austrian Armed