Unique Design: GEX had design patent for the basement, more stable when you use it. Quality Material: High-density canvas outside, 100% cork Inside, easy to put T pins in and out when you are making wigs and fewer pinholes will be left on the surface. Canvas Head Circumference: 22.5" (Measure Like The Picture) Height: 10" Color: Light Brown. The diameter of GEX canvas head mount hole is 1”, suit for mostly mannequin tripod, GEX mannequin tripod is a perfect match with it. GEX Updated Canvas Head is the professional designed for hair experts, salon, stylist and DIY wig-makers. Top-Rated Brand in the market, purchase with confidence.