Mask is designed to fit average sized faces with an eyebrow level circumference of 21-23" but can be heat formed to accommodate up to 24". Fits 1.25" or 1.5" eye blanks depending on the way the eye ports are trimmed. Hand cast from urethane resin, each will be slightly different inside and small bubbles/wrinkles are considered acceptable casting birthmarks. Casts will be sent raw and uncut, you will need to trim the edges with flush cutters (included in your order) and cut the eyes and jaw open with a dremel or heat+exacto knife.