Positioning Wedge 30Ô w Convluted Surface & LSII Cvr Jobst Relief 20 30 Waist High Knock Down * Easily assembles without 85180 Knock Down * Easily assembles without tools * 3 Non skid rust resistant swivel casters (2 rear locking) * Anodized aluminum frame * Back removes for easy cleaning (tool free) * Comes with removable 12 qt * The InTENSity Select Combo II is the newest standard in portable multifunction electrotherapy offering patients four (4) modalities in one user friendly ergonomic design Transcutaneous Electrical Nerve Stimulation (TENS) Neuromuscular Electrical Stimulation (NMES) Interferential Stimulation (IF) and RUSSIAN (RUSS) 12 W x 34'L x 7 H * A bed positioning wedge contoured to an optimum 30¯ * Provides optimal 30 degree angle of incline for relieving pressure on hipbone and coccyx * Wedge is comfortable and made from convoluted foam * Low Shear II wipe clean outer cover reduces skin damaging friction * Can be disinfected for infection control * Non slip bottom keeps wedge securely in place * Super Soft Convoluted foam surface *