Simply press any object into the Bio-Foam® block to create a permanent and accurate 3-dimensional impression. Castings can be made directly from the impression—the high-density foam provides extremely fine detail. Packaged in a self-storing cardboard container, Bio-Foam® is designed for single use. This double version has 2 impression areas measuring 13-3/4" L x 5-7/8" W x 2-1/4" L each.