Our POWER POLYGONS SET OF 450 will be enjoyed by both teachers and students! Plaster impregnated gauze that comes in a convenient in.fan-foldedin. package (20lb. and 5lb. boxes). The gauze band is 6in. wide and the continuous fan-fold packing allows for ease of use and handling! Just wet strips and mold around a base shape. Plast’r Craft® adheres to itself or any porous material. After it dries, sand smooth and paint (Instructions included). It's non-toxic and suitable for use with all ages. Plast’r Craft® comes in a 4in. x 5 yard roll in a colorful retail package for smaller projects. 20 lb. and 5 lb. boxes for larger group activities.