Always be equal in value to the current domestic 1 ounce letter postage price Say thank you in style with these self-adhesive stamps being issued in Sheets of 20 Stamps Enjoy the Great Outdoors stamps in five designs, in a pressure-sensitive adhesive pane of 20 stamps. These hand-sketched and painted designs depict five different scenes showing outdoor activities: Building a sandcastle, Canoeing, Hiking, Biking, and Cross-country skiing.