Perforated window cling is a PVC vinyl substrate. With the top coated perforated white flex vinyl laminate, it is coated with a removable pressure sensitive adhesive back and a paper back release liner. Upon removal adhesive should not transfer to glass or car window. Graphics can be viewed from the outside and seen through from the inside. They will appear lighter on delivery until release liner is removed from the back and applied to your surface. Turn your windows or doors into highly visible point of sale graphics to promote your business and increase sales. For best application results the outside temperature should be above 50 degrees F. Best to install the material when dry (do not wet).