100 Durable Elastic Black Flat Polyethylene Zip Lock Pouches 7x10cm (2.7x3.9") Colors (Front/Inside/Back): Black/Black/Black Outer Size: 7x10cm (2.7x3.9") Inner Size: 6x8cm (2.3x3.1") Material: Polyethylene, Thickness: 2.625 MIL (7C) Can store up to 45g of powdered products