Flat Bottom Coffee Pouch Bag with One Way Degassing Valve and Pull Tab Zipper Must using the Impulse Heating Sealer to seal the top of bags after putting Coffee beans or ground inside Material lamination: Natural Kraft Paper + Aluminum foil fused protective inner lining + LLDPE Hold 8 oz (0.5lb) coffee ground or bean - Volume may vary depending on fineness of ground coffee; One Way Degassing Valve, Resealable zipper, Flat Bottom for better Shape Measurement: Width 5" X Height 7.5" X Side & Bottom Gusset 2.5”; Package Quantity: 100pcs