This Half face respirator is made by Elastomask Pro and is a size Medium/Large. Its model is the Elastomask Pro and it costs about USD80. It has a Med/High 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 and 4.75 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 5.25. The average depth of the mask is 1.75 inches. You can find more information about this mask at https://reusable-respirators.com/product/elastomaskpro-respirator/. This mask weighs about 126 grams. Feels "sticky" and one-size straps