100 Glossy Black Two-Sided Aluminum Mylar Zip-Lock Flat Style Bags Outer Size 7.5x10cm (3x4") Colors (Front/Inside/Back): Black/Silver/Black Outer Size: 7.5x10cm (3x4"), Inner Size: 6.5x7cm (2.6x2.7") *Size may vary 1-2mm. Material: Metallic Mylar, Thickness: 3 MIL (8C) Can store up to 25g of powdered products