CPI's air collar is constructed of 100% polyurethane (PU) for its outer cover and contains our patent-pending removable bladders constructed of urethane film. The collar is outfitted with stainless steel D-rings for tie downs and lifelines. Our collars are built to the customer's specs and can include a variety of trim packages. Standard rope strips or custom attachment methods are available and can be configured to the customer's specs.