Work standing up, against the wallGetting down to the floor is not always practical — and for the upper back, shoulders and neck it is not even the best position, because lying on a tool tenses the muscle you are trying to reach.The Double-Track mounts two anodised aluminium rails vertically on your wall. Clamps hold a Beastie base or a pair of Bar stands onto the rails, and slide to lock at any height. You set the tool where you need it, then lean into it — controlling pressure by how much weight you shift, and stepping away the instant it is too much.What comes with it Two anodised aluminium wall tracks Xtra Firm Beastie Massage Ball with base Xtra Firm Beastie Bar with stands Two clamp sets, one for the ball and one for the bar Both tools are Xtra Firm on purpose. Leaning against a wall applies far less force than lying on the floor, so the firmer version is the one that registers in this position.Made in the USA.