100 Black Premium Metallic Foil Open Top Mylar Bags with Tear Notches Outer Size 12x18cm (4.7x7.1") Colors (Front/Inside/Back): Black/Silver/Black Outer Size: 12x18cm (4.7x7.1"), Inner Size: 10.5x17.5cm (4.1x6.9") *Size may vary 2-3mm. Material: Metallic Mylar, Thickness: 3 MIL (8C) Can store up to 170g of powdered products