Crafted out of double-wall nylon strap material that is double-stitched for added strength. This Barrier Strap features a universal design that measures 45in.L x 3-1/2in.W, which allows it to be used on almost any style doorway. Strap incorporates magnetic inlays on each side (inside the double-stitched nylon pull tab) for quick application to metal door frames, hinges or door strikes. The unit can be used indoors or outdoors, and simply rolls up for easy and compact storage almost anywhere. This strap reads, "Closed For Cleaning" and features thick black caution stripes to improve visibility.