100 PCS Black Matte Foil Zip Lock Gusset Bags Pouches 10x15cm (3.9x5.9") Colors (Front/Inside/Back): Black/Silver/Black Outer Size: 10x15cm (3.9x5.9"), Inner Size: 9x11cm (3.5x4.3") *Size may vary 2-3mm. Material: Metallic Mylar, Thickness: 3 MIL (8C) Can store up to 100g of powdered products