About John Boos

John Boos M.A.S.S. line enhances diversity for settings that include Physical Therapy, Rehabilitation, Personal Training, CrossFit Training, and Sport Specific Training.


Product 1

The M.A.S.S. Glutes-Back Plus is the safest and most effective way to perform the Back Extension exercise. The unique adjustable multi-pad system secures the user with the knees slightly bent, providing outstanding isolation on the glutes and back.

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Product 2

The M.A.S.S. Squat-Shrug Plus is the safest and most effective way to perform many of the most beneficial strength and free-hand exercises. The unique adjustable height/multi-directional handles system offers the user dozens of options to safely start, perform, and end exercises that include squats, deadlifts, shrugs, farmer’s walk, push ups, pull ups, and dips. 

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