The Adidas Door Gym Is A Cost-Effective, Space Efficient And Versatile Piece Of Home Training Equipment Designed To Build Your Upper Body Strength And Improve Your Posture By Straightening Your Shoulders And Strengthening Your Core And Back. Fitted With Strategically Placed Padded Hand Grips, The 3 Pull-Up Variations Help To Target Your Biceps, Shoulders, Upper And Lower Back And Core. Can Also Be Used On The Floor To Give You A Greater Range Of Movement For Press Ups And Dips, Targeting Your Chest And Triceps.