RJ Classic Navy Sienna SunShirt with 37.5® Temperature Regulating Technology
- Worn alone or as a base layering piece, the Sienna 37.5® Shirt is perfect for schooling or just wearing about.
- The Sienna 37.5® Shirt blends cutting edge technology with traditional styling to form the perfect synergy.
- The fabric features 37.5® technology to keep you cool and comfortable, as well as stylish, along with mesh underarm panels for added breathability.
- Patented 37.5® technology has proven to help your body manage its core temperature, thereby increasing your stamina.
- 37.5® 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.
- 37.5® particles are naturally derived and work for the life of the product (it will never wash out!
- Machine washab