Urias Air Splint - Leg/Foot Transparent air splint facilitates correct positioning and support compression. Made of durable PVC sheeting with an inner layer that provides superior molding around the limb. Latex free splints are open at both ends. Plastic zipper closure for easy donning and doffing. Use to immobilize the distal joints and to restore motion and control at the proximal joints. Apply to limb and inflate using a filter and a disposable mouthpiece (sold separately). Filters help prevent moisture from accumulating in splints. Filters change color to indicate the need for replacement. Clean with warm, soapy water. To size, measure the length of the extremity. Measurement equals the length of the splint before inflation.