This set of 100 plastic bags is perfect for use in packaging and shipping. The bags are 9 x 12 inches and have a thickness of 2 mils, providing ample protection against suffocation warnings. The brand is Uline and the model is 9 x 12 bags 2 MIL. These bags are not custom and are made of durable plastic material. They are ideal for use in various packing and shipping scenarios, including for business and industrial purposes.