BreatheWear offers the finest in replacement CPAP headgear and CPAP chin straps. Halo® Chin Strap is a reusable accessory worn by a sleep apnea patient to keep the mouth closed during sleep. The Halo® Chin Strap is a chin support of unique design for comfort and stability. The chin support itself is made of a breathable, flexible fabric with two adjustable Velcro® ends that feed through the one-piece halo that is worn over the crown of the head. The user may tighten/loosen the fit by adjusting the chin strap on either side of the head. The Halo® Chin Strap will accommodate a wide range of head sizes up to a maximum circumference of 26" from chin to crown of head.