Custom Reusable AwePackage 1kg 2lb Resealable Flat Bottom Plastic Coffee Packaging Bags with Valve 
Description of coffee bean packaging bags :

• They are square/block bottom bag with zipper.
• The zipper is on one side, another side is without zipper.
• They have a big opening for easily filling products in.
• You need to heat seal them above the zipper.
• When the consumer wants to open it, should tear the bone shape line.
• Then open the zipper under the tear line, the consumer can open and close for many times with the zipper.
• The one-way valve on the coffee bags can exhaust the carbon dioxide inside and prevent the outside air into the bags.