An A4 sheet of repositionable foam. This item is essential for use with unmounted rubber stamps. See exactly where and what you are stamping with the ability to reposition the stamp before inking. Cut the foam slightly larger than your stamp. Peel off the white backing sheet to expose the adhesive side and attach to the stamp. Trim off the excess sheet so only your desired stamp is exposed. Peel off the clear backing paper and use this side to attach to your acrylic mounting block or your stamp storage sheets when not in use. Mount n Stamp can also be used to create your own stamps from Dies, Alphabets and Punches. Acid free.