This kit includes SIRCHIE®'s Shake-N-Cast™ dental stone* casting material in five (5) pre-measured pouches. Each individual SNC42 pouch contains the correct amount of casting material and water in a self-contained packet. One pouch will cast an adult size footprint up to 15" long. Merely press down on the pouch to break the water packet, shake for 30 seconds, knead the pouch for up to 1 1/2 minutes, and then pour into the impression. The kit contains 2 cans of our new Aerosol Dust and Dirt Hardener for preparing impressions in loose or sandy soil, as well as Silicone Release Agent to simplify cast removal and cleanup. Two cans of Snow Impression Wax are included for casting in ice or snow. The 2 casting frames are easily sized—one for footprints and one for tire tracks.