Mosaic Roho Cushion 18 x16 w Standard Cover Respiratory Tubing 30 psi * The inexpensive Wall Transformers 30 psi * The inexpensive way to reliably measure hand and finger strength * With an indicator dial that remains at the maximum reading until reset * Calibrated in psi * Textured finish for an improved wet dry grip 18 x 16 * Designed to provide a comfortable functional and stable sitting environment * 3 poly vinyl interconnected air cells are easy to setup inflate and adjust * Easy to handle and transport: weighs only 1 lb * Includes pump and patch repair kit * Includes a reusable washable cover * 12 month limited manufacturers warranty *