The DreamWear Silicone Diametric Pillow Cushion by Philips Respironics is a specialised all-silicone nasal pillows cushion for the DreamWear mask. Available in various sizes, it offers a comfortable and leak-resistant fit. Select the correct size. Follow manufacturer's instructions for proper setup to ensure effective CPAP therapy. For precise usage guidance, consult the user manual or contact the manufacturer.