100 Black Metallic Mylar Zip Lock Stand Up Bags Pouches 12x18cm (4.7x7") Colors (Front/Inside/Back): Black/Silver/Black Outer Size: 12x18cm (4.7x7"), Inner Size: 10.5x14cm (4.1x5.5") *Size may vary 2-3mm. Material: Metallic Mylar, Thickness: 3 MIL (8C) Can store up to 210g of powdered products