The Wonder Core lets you take advantage of resistance on the way down and up with every repetition so you‎‎'‎‎re essentially getting double the workout in half the time‎‎!‎‎ This brilliant fitness tool also provides a full 180 degree range of motion‎‎,‎‎ meaning you can isolate and train your lower‎‎,‎‎ middle and upper abs‎‎-more more for tighter and faster results‎‎.‎‎ A thick foam cushion supports create an invigorating massage up and down your back as you train to help revitalize your spine and back‎‎.‎‎ And best of all‎‎,‎‎ you‎‎'‎‎re nestled in an ultra‎‎-comfortable seated position with your head and neck fully supported through the full range of motion so anybody can do it‎‎!‎