Sentry® SuperBand® Allergy Alert Patient Identification Band, 11 1 2 Inch, 1 Box of 250 Labels * Facilitaties extension and flexion reducing the risk of * Facilitaties extension and flexion exercises * Isolate extension of all fingers and individual finger joints * Develop isolated finger strength flexibility and coordination * Vary resistance by changing toa different color coded rubber band * 4 color coded band resistance levels (tan yellow red green) allow each muscle or joint to work at a comfortable level and build as increased strength is achieved * For rehabilitation of carpal tunnel arthritis stroke fractures tendon injury nerve lacerations tennis elbow and more Batteries not included even in low light Patient alert wristband is constructed of lightweight polyester that won't stretch