Avery Elle Clear Stamp Set 4inch X6inch Peaceful Pines – These clear stamps peel off their backing and stick to any acrylic block making for easy stamping. Simply apply your favorite ink and stamp crisp clear images! They are made from 100% photo-polymer which is latex free, phthalate free and non-toxic. This package contains Peaceful Pines: a set of 8 stamps on a 4×6 inch backing sheet.