Hidden interior zipper 37.5 fabric technology Machine washable The Skylar show coat combines classic styling with cutting edge 37.5 technology to form a truly elevated garment. This patented thermoregulation technology keeps you comfortable by helping your body to maintain an optimum core temperature of 37.5° Celsius (99.5° Fahrenheit), which is ideal for peak athletic performance. The particles embedded in the fabric are naturally derived and will never wash out. The fabric also features the impeccable balance of structure and stretch to maintain that traditional styling, but with an optimal amount of stretch for ideal comfort. For maximum performace, pair with the R.J. Classics Maddie show shirt, which also features 37.5 technology and together, create a perfect layering system.