18-1/2"D x 12-3/4"H x 2" thick. Can be used in any chair. Elevated model available. (706020 & 706021) Vertical support stabilizes torso. Foam-cushioned armrest trough supports arm. May be used on left or right side. Low-Shear II wipe-clean cover. Rigid insert maintains strong support.   #914210-Each Latex Free UNSPSC#42191819