'V-shaped transparent perspex positioner which is lightweight and easy-to-clean. Ideal for maintaining a patient''s position during s urgical procedures The positioner also elevates the patient slightly to help clear excess fluid. Sizes in this 3-piece set are : 1.small: 180mmW x 200mmL x 55mmH 2. medium: 200mmW x 250mmL x 60mmH 3.large: 220mmW x 350mmL x 78mmH