These bags are environmentally friendly. They are made using awoven polypropylene fabric. These bags can be stronger and morerobust than non-woven polypropylene bags. They are permeable to airand can be done with some resistance to rainwater. They have abetter presentation than the non-woven bags, and they are generallyprinted in full or with a special coating giving an excellentappearance to promote your brand or company image. They can comesimple, or with zipper, or Velcro.