... :TD45-50%; MD25-35% 4.Good Heat Sealing Heat Shrink Bag also known as: Super Shrink bags, square bags, retail shrink ... bags,Heat Shrink Wrap Bags,Domed PVC Shrink Bag,PVC Shrink Bag,PVC Heat Shrink Bag:Shape:Square,Cambered,Trapeziform, Thickness:0.018 ... . Fast and easy to use. Just drop your product into a bag, then seal the open end. Bags are heat shrinkable to ...