Vac-Lok custom-formed vacuum cushions provide comfortable support of the head and neck as well as the upper shoulders. Filled with tiny polystyrene beads, the cushion forms a rigid mold when a vacuum is pulled. The versatile system can be used to create a patient specific cradle, and is reusable after the patient treatment cycle is complete. Vac-Lok cushions are available in a variety of shapes and sizes in both polyurethane or nylon finishes. The nylon Type-S™ cushion is indexable.