Pro Therapy Supplies, located in the metro Atlanta, GA area, is an authorized dealer for Advanced Fitness. Advanced Fitness is the inventor of the Manta Ray and Sting Ray products. Both of their patented squat snap-on attachment help lift the bar of you and allowing user to concentrate on the exercise, form in neutral position, and protection of the lifters body. Put this breakthrough load distribution technology to work for you today and get your money's worth for an awesome workout!