Lavinia Stamp - Zen HousesThe clear polymer resin used to manufacture these stamps enables them to cling onto the acrylic block without the need for adhesive.Once you have finished your project, simply peel your stamps off the acrylic blocks. A quick wash with soap and water, and they are ready to be popped back onto the acetate sheet for easy storage. Includes 3 clear stamps. Size 1.5 x 2.5 inches.