Medium Weight Bags Poly Bags are an excellent way to keep your goods free from moisture, dirt or dust. Suitable to package items such as household goods, medium weight items, clothing, fresh and dried food goods. The high visibility of the Medium Duty Poly Bags are an excellent feature when it comes to collating and packing your goods together giving a neat and clean appearance. Unless otherwise stated all dimensions given are internal. No actual fish were used during photography to display our polythene bags.