100 PCS Clear Front Silver Inside Black Back Flat Foil Mylar Zip Lock Bags Outer Size 8.5x13cm (3.3x5.1") Colors (Front/Inside/Back): Clear/Silver/Black Outer Size: 8.5x13cm (3.3x5.1"), Inner Size: 7.5x9cm (2.9x3.5") *Size may vary 1-2mm. Material: Clear & Metallic Mylar, Thickness: 3 MIL (8C) Can store up to 45g of powdered products