This bag made of food grade, high quality, premium Mylar, Clean and safe. Stand up, zipper lock, heat sealable, resealable, reusable.These bags can be sealed with an impulse sealer to prolong the shelf life of any product. Can stay open by itself making it effortless to fill. Keep all water and moisture out and any odors in when closed. Perfect for coffee, beans, candy, sugar, rice, baking, cookie, tea, nuts, dried fruit, dried flowers, powder. Moisture proof, heat sealable, can use the heat sealer to seal the bag, with tear notches.Measures: 3.94″ x 5.91″.You can customize LOGO, size and color.