AB Slim Flex Duo-Flex Technology Abdominal Trainer Tone Your Abdomen In A Fast and Easy Way. Just 5 Minutes A Day! For Upper, Middle, Lower Abs. Comfortable and Easy-to-Use  Perfect For Any Age or Fitness Level! Designed For All Body Types. Generates Resistance On The Way Up and Down. Optimizes Your Effort In The Shortest Time Possible. Back and Neck Support Prevents Injuries For A Safe and Effective Workout. Lightweight and Compact Design Allows For Easy Storage. Supports Up To 220 Lbs.