Positioning Wedges 30 Degree 7 x 12 x 24 (Pair) Patient Chairs 5 * Recommended for normalizing MSHQ 113100 5 * Recommended for normalizing patella tracking and helps reduce anterior knee pain caused by patella instabilities * Provides support for patella malalignment dislocations or subluxations * Patented lightweight material for added comfort * Aluminum hinges for additional support and to help control hyperextension * Easy application and adjustment * Provides 2 hours of cold therapy * Removable inserts can be exchanged without removing the wrap to provide long term cold therapy * Keeps patients comfortable and dry while allowing mobility * Can effectively penetrate surgical dressings to decrease pain edema and secondary hypoxic tissue injury * Provides optimal 30 degree angle of incline for relieving pressure on hipbone and coccyx * Wedge is comfortable high density foam * Breathable low shear 4 way stretch cover with antimicrobial protection requires friction * Slip resistant bottom prevents sliding