Position Aid Otho Standard Set is one of the most economical positioning aid available out there. Has a high drag coefficiency which reduces slippage for east patient management. Each piece is soft, artifact free, maximum resilience, strength, and stability. Set includes: (1) 45 spinal wedge, (2) 45 triangles, (2) 18 wedges, (2) rectangles (2" x 7 1/2" x 9 1/2") & (3" x 10" x 10"), (1) finger block (1) knee block.