PFP1023 Features: * Abdometer * Designed to strengthen and balance your core * Targets entire abdominal area with emphasis on lower abdominal muscles * Like having your own personal trainer: elicits a beeping sound until you use proper form * Self Inflates to fit your body and keeps your back in its neutral position * For those with weak abs all the way to advanced athletes Specifications: * Has modes for endurance and strength, 10 levels, a built in strength test and 20 illustrated exercises