EPP Iron ons are die cut from Hugs 'n Kisses applique paper. This paper is 50% water soluble with a light glue coating on one side. The shapes are fused to the wrong side of the fabric, roughly cut out with an approximate 1/4" seam allowance, glued over and then stitched together by hand or machine. The papers DO NOT need to be removed. If washed the 50% stiffener will dissolve.