Marpac Bariatric Tracheostomy Collars 920D dispensing box of 10 Adult mask - Velcro™ attachment tabs 920B bulk box of 100 Adult mask - Velcro™ attachment tabs 925B dispensing box of 10 Pediatric mask - Velcro™ attachment tabs 925B bulk box of 100 Pediatric mask - Velcro™ attachment tabs