LITTLE KNOWN FACTS ABOUT VAPORBA.

A VBL can be a non-breathable substance that doesn't permit the transmission of moisture by it. They are generally made from fabrics like silicone-impregnated nylon, polyurethane-coated nylon, or Mylar; and you will find not less than two multi-layer proprietary fabrics as well. within a pinch a VBL could be made out of a plastic trash bag or even