This is the replacement Aerosol Mask for Roscoe nebulizer systems. Roscoe's Aerosol Masks are made of soft clear vinyl with an anatomical form. The fit maintains proper positioning behind the head giving greater comfort for the patient. The Adult aerosol mask is a lightweight nebulizer mask made with soft clear vinyl material. The adjustable straps let users position and place the mask for comfort during aerosol therapy. The innovative design and anatomical form of the mask ensures the perfect fit with a secure seal for the delivery of treatment with proper inhalation. This mask will connect to any standard aerosol tubing, but no tubing is included in this package. Many patients prefer using a nebulizer mask instead of a nebulizer mouthpiece as they provide an easy-to-use hands-free method to deliver treatment. As the nebulizer changes liquid medication into a mist, this nebulizer mask makes it simple for patients affected by asthma and other diseases to correctly inhale their medicine to increase its effectiveness. Nebulizer masks are often the preferred choice for adults as this method is highly effective for delivering medication directly to the lungs. This is the mask only. Tubing and nebulizer are available separately. This is one case of masks and there are 50 masks in each case. The unique design ensures the straps on the mask maintain proper position behind the head for comfort. When the mask is used in conjunction with the Roscoe nebulizer system, the total package provides 80% of medicinal particles in respirable range quickly and efficiently. The mask is disposable and intended for single patient use only. Not just for adults, the replacement masks are also available in pediatric versions. Roscoe masks and tubing are all Latex-free.