Twister with links Profit DK3410A Twister with links stabilizing the posture of the body and supporting training of main parts of the body. Massaging surface adapted anatomically to the foot. Special placement of protrusions guarantees stimulation of sensory receptors and massage effect. Built-in magnets additionally stimulate blood circulation.  Technical data:· built-in magnets· anti-slip surface middot; links with flexible foam handles middot; diameter 27.5 cm· material: plastic plastic