This Half face respirator is made by Gill and is a size Regular. It comes in both regular and PRO models for USD 12 and USD 36 respectively, and the PRO model is pictured here. It has a Medium nose bridge height, and its facepiece is made of Silicone. The width min and max distances, in inches, curving from mid cheek to mid cheek are 3.75 and 5.25 respectively. The distance in inches, straight up and down in the middle along the nose line is a minimum of 3.5 and a maximum of 4.75. The average depth of the mask is 1.35 inches. You can find more information about this mask at https://www.gillmask.com/collections/frontpage. This mask weighs about 77 grams. Pro comes w/ silicone strap, specific filters, regular w/ fabric strap, replaceable filter