Breakaway Lap CushionsA perfect reminder to stay seated while providing a good place to rest hands The act of rising thrusts the cushion forward and disengages the hook and loop tabs, allowing the cushion to fall aside Fits between wheelchair arms 3 3 4" thick Made from vinyl covered polyurethane foam 1 each BASE MATERIAL Foam COLOR BLACK LATEX FREE Yes, No MRI SAFE Yes MATERIAL Foam,Vinyl PRODUCT TYPE Wheelchair Cushions THICKNESS 3. 75 " UNSPSC 42143607,42141705,42241809