This is a 3B Medical Siesta Nasal CPAP Mask with Headgear Fit Pack. The package was opened to examine the mask—but the mask was never used. It is brand new and includes Small, Medium, and Large cushions, the user manual, a chin strap, and the original packaging. From the manufacturer: Petite and flexible, the Siesta Nasal Mask N5B All-Size Kit is a dream to apply and wear. To help you find your best fit, the pack includes three cushion sizes in small, medium, and large for a customized feel. These are $80 retail.