The Teeter EP850 Inversion Table rotates on a pivot system & by simply shifting the weight of your arms the table easily rotates to any comfortable angle. The smooth rotation allows for oscillation & intermittent traction. Adjustable roller hinges allow you to pre-select three levels to control the aggressiveness of rotation, while the tether strap means that you can pre-select the maximum angle of inversion. Comfortable ankle clamps hold you securely while inverting. The EP850 is also able to lock out at full 90° inversion allowing you to perform inverted sit-ups and squats. The table is self-controlled & can be unlocked with simple arm movements. Although most people find the standard ankle clamps to be comfortable, some users may require additional support. Teeter offers the option to convert the EP850 for use with gravity boots. The optional Adapter Kit comes complete with Gravity Boots & the CV Bar needed to convert the table. The EP850 Inversion Table folds compactly for storage in a cupboard or in a corner. The nylon mat can easily be removed for cleaning. Every table comes with an instructional DVD & laminated owner's manual. Although a little assembly is required most users should be up & running in a matter of minutes. This inversion table will turn anyones routine upside down! Endorsed & used by the likes of Ozzy Osbourne, Eva Mendes & even David Blaine who utilize Inversion therapy, Teeter is also a great way to train your abdominals.