CanDo® Half Round Foam Roller, Extra Firm, 6 x 36 Inch, 1 Each Food Bumpers Protects joints nails and distal 10883 Protects joints nails and distal corns * Reduces pressure friction and irritation between toes * Soft washable poly foam with nylon cover for added durability * *Dual Independent Channels *Adjustable timer on standard and digital units *Adjustable Frequency and Pulse Duration parameters *Basic and Standard units feature three modes: Burst Normal and Modulation *Digital units feature 5 modes: Burst Normal Modulation Rate and Width Strength Duration and Bi Pulse * Digital unit has easy to read LCD Display and convenient digital controls The extra firm half round roller is ideal for muscle restoration these rollers are durable as they feature premium molded foam that is firmer and more rugged than polyethylene