The Stencils are lasercuttet to special plastic Sheets. The Stencil is made out of transparent aprox. 200my thick foil, wich is solvent resistant and flexible. The foil is NOT self-adhesive, but you’ll be able to use non-permament adhesive-spray if you would like. Use the adhesive-spray If in case you have a somewhat concave/convex Underground, then each and every a part of the Stencils sticks to the underground whilst you spray. Test your underground beforehand if it is compatible with your adhesive-spray. The Stencil last a long time if cleaned properly. Clean the Stencils with a soft paintbrush, if you use waterbased colors, use warm Water to clean it right after spraying. If in case you have solventbased colors, use thinner or brush cleaner. Do not let the Stencil go with the flow too long / over night in solvent, thinner or brush cleaner! – else the Stencil may warp.