Dukal™ NonSterile USP Type VII X ray Detectable Gauze Sponge, 4 x 4 Inch, 1 Box of 100 Heavy Duty Massagers 24 Long * Can be Jobst Ultrasheer 30 40 ThighHi 24 Long * Can be used with either standard arm or desk arm wheelchairs * Double notches allow the board to be used on either the right side or left side of the wheelchair * Constructed of plywood and finished with a smooth lacquered finish * The 24 board has one built in handle while the 29 board has two built in handles * ´ thickness * Notch designed to fit into up right of wheelchair arm for added security during transfer * Supports up to 300 lbs * Aids in reduction of cramps and stiff neck during USP Type VII Blue filament in each sponge with a wave pattern ensures X ray detection