https://www.tricorbraunflex.com/12oz-white-biotre-block-bottom-bag-w-valve.html
12oz White Biotre 1.0 Block Bottom Bag w/ Pocket Zipper & Valve
12 oz white Biotre compostable block bottom bag with one way degassing valve. Recommended for packaging coffee beans and ground.
block bottom bag12ozwhitepocketzipper