BFO Kit contains two 5-3/4" x 10-3/4" AliPlast™ 10 sheets and three 9-1/2" x 5-1/2" Plastazote® #2 sheets. Lay sheets on one another in convection oven and they auto-adhere. Mold directly to patient. Fabricate a semirigid device in less than 30 minutes! Can be ground and posted easily. High patient tolerance. Instructions included. X-Large Kit has sheets measuring 5-3/4" x 12"