The ATIS 4000 AB Training System provides the additional benefit of AB training while inverting. By including AB and CORE training to the inverting position, it will isolate the abdominal muscles more effectively than bench t raining. At the same time inverting will provide effective back stretching and relaxation. The AB Training System expands the use of inversion tables and provides an additional dimension to inverting by using 10 different locking angles of inversion. The ATIS 4000 can be locked for safely mounting and dismounting as well. Extra Wide oval tubing steel frame for additional weight support. Scratch resistant powder coated finish. Foam covered steel, extra-long safety handles. 2 1/2" foam back rest provides an extra comfortable platform with an extended head rest for head support "Comforter" ankle holders prevents any pinch point pressure while inverting. "Smart Gear" (patent pending) allows the table to lock at 10 different angles and prevents any "free falling" while inverting and allows the user to "lock" the table at a 90 degree inverting position. "Ratchet Gear" locks the ankles in place easily. Height adjustment up to 6"6". Supports up to 320 lbs. Inverting hand grips (patent pending) provides maximum stretching while inverting. Extra-large foot platform for easy on and off. Extended foam safety handles for easy return and body positioning. "Super Side Holder" can store cell phones, eye glasses, wallets, coins, watches and other articles. Front durable rubber foot stabilizers for extra stability.