QQ Studio 100 Durable Double-Sided Metallic Foil Mylar Flat Ziplock Bag 7.5x10cm (3x4) (Gold) Material: Metallic Mylar & Foil Outer Size: 7.5x10cm (3x4"), Inner Size: 6.5x7cm (2.6x2.7") *Size may vary 1-2mm. Thickness: 3 MIL (8C) Can store up to 25g of powdered products