Roho Hybrid Elite Cushion Single Valve 18 x18 x4.25 Bath Shower Chair Accessories very simple to use Instrument and Solution Stands very simple to use allowing you to recognize and boost speech over background noise and manually adjust the volume depending on the environment you're in Foam base may be wiped with damp cloth * Neoprene rubber cushion insert can be patched or repaired to extend use * Customized Jay foam base and ROHO air insert are fluid resistant * Cushion size:18 W x 18 D * Wide ranges of sizes also available to fit chair widths 14 to 24 upon request * Weight capacity: 550 lbs * HCPCS Suggested Code: E2622 * 2 year warranty Cover with encased comfort foam is machine washable