Keep fresh bread loaves fragrant, rustic loaves fresh for days and bagels just the right texture. They are great for bulk-purchased flour, grains, pasta and even pet food. They reduce dependence on plastic bags, while reducing waste and recycling efforts. Fresh bread bags are designed for practicality, from the wide easy-access opening to the longer loaf size ~ great for freezer storage of pre-sliced bread! When not in use, they fold down smaller than a breadbox. Our bags are pre-shrunk and color fast, made of 7.5 ounce Cotton/polyester natural color canvas twill, with thick gauge polyethylene plastic (4ml) lining for air tightness. The combined strength of these two layers make Best fresh bread bags reusable for years. The bags are dishwasher safe as well as washing machine safe.