100pcs aluminum foil stand up pouch smell proof zip lock coffee bags packing bags with window 12*20cm

it is made of aluminum foil, it is suitable to pack snakes, foods, coffee, pet's food, bait, coffee, dried fruit, snakes, and so on. the bag has zipper and can be locked by itselft. there are six colors: red, green, black, purple, white, golden and four sizes for your choice. this link is for 12*20cm. others are in the following link, please refer to it if you are in need. the thickness of it is 0.2mm. the quality of this bag is very good. minimum order:100pcs/lot and the minimum order is 1 lot support custom, print logo or design