Provides limited cervical motion control, and is recommended wherever a reminder against making quick and painful neck movements is required. The anatomically contoured shape comfortably fits the contours of the chin and jaw. Especially convenient for wear while sleeping. Soft polyfoam padding closely conforms for a custom fit. The lightweight stockinette covering is breathable and keeps the neck area cool for long term wearing comfort. Hook and pile closure in back for quick and easy fit. Measure neck circumference for size, for front depth, take a straight line measurement from sternal notch to base of mandible.