This is the Soloflex machine we first made in 1978. We only changed the cosmetics of the machine but never the quality. Adding curves to the main frame and barbell arm only made it seem a bit sexier not more functional. The addition of the urethane foam pad instead of the beautiful hardwood bench was for extra cushioning and nothing else. The hardwood bench was one of the big requests when bringing back this original. We were asked so many times from our loyal long time customers to bring back the original that we decided we needed to listen. They are purists and like things just the way they were. We are more than happy to please everyone. The Retro and the Classic Soloflex are both works of art in form and in function. Bringing back the shock rings to add to the original was an easy decision. Both the shock rings and the rubber straps are equal in resistance and ease of use and are both proper in weight and balance. The shock rings have a nylon housing which helps protect them from the elements but that is really where the differences end. They are lighter but just as easy to load and unload. You will love them. The Retro offers 24 standard barbell and free-body exercises even without the leg extension and or butterfly. The leg extension can easily be added to your Retro. Just let the operator know you want to add ears to your flube at no cost and this will allow you to add the leg extension any time (can only be changed with phone orders not on line orders). The butterfly on the other hand can be added with not a single change to the machine. With or without the attachments you will love your new Retro Muscle Machine. Some things just stand the test of time and this machine is one of those things. I guarantee you’ll love this machine. I think you’ll love it even more if you’ll add a few iron plates to the barbell arm, combining them with the shock rings. There’s something about using them that feels so sweet, nothing else like it in the world. I’m really pleased to be offering this machine again. Jerry Wilson All Soloflex Muscle Machines are 4 feet wide, 4 feet deep and 6 feet tall. An additional 2 feet of clearance are required for some exercises. Machines with a leg extension are 6 feet deep fully extended. 30 day money back guarantee (less shipping charges). Includes: Dip Bar, User Guide, Workout DVD, Curl Tubes, Roman Chair Pin, 405 lbs of Shock Rings ( 6-50's, 2-25's, 4-10's, 2-5's, 2-2.5's) and the original hardwood bench. All the pins for assembly are included. *Please allow 6-8 weeks for delivery of the Retro Soloflex Muscle Machine.