The knee splint provides superior immobilization and compression of the knee. The adult kit contains two 5" X 18" padded fiberglass splints and two 6" elastic bandages. The child kit contains two 4" X 14" padded fiberglass splints and two 4" elastic bandages. Both are available with or without water for fiberglass activation. Adult size is recommended for subjects greater than 5'4" tall, child for less than 5'4" tall. Please watch the application video for best results.