Where/when I grew up in the 60's early 70's you wore old clothes to hunt in period. Buddies brother brought me an army jacket liner home from Germany where he was stationed. I thought I died and went to heaven.
Brown flannel lined pants from Costco are usually $19.99, down vests on sale for $14.99 and the jackets for $19.99.
They are so light that they are perfect for layering under any old light camo shirt/jack that you might have laying around.
Boots is where I don't mind spending a little $$$ though.
