Using BIO-FOAM® to make impressions of footwear is easy, takes only seconds, and does not get the footwear dirty. Each BIO-FOAM® Impression Kit comes in a cardboard container which is suitable for storage and will protect the impression while in the evidence storage room. The foam is blue in colour and the size is 14” x 6” x 2 1/4”. 1 Press the footwear in the BIO-FOAM® and remove the shoe. 2 Liberally coat the BIO-FOAM® impression with hair spray. Wait until it dries and pour in the prepared dental stone. 3 Allow it to cure. 4 Remove the cast from the BIO-FOAM® impression and allow it to dry for about 48 hours. 5 Once the dental-stone cast is completely dried, rinse it with running water and gently scrub it with a bottle brush to remove any excess foam.