North Shore Saddlery

RJ Classics Sienna Jr. 37.5 Training Shirt

RJ Classics

SKU: SNJ525-L_

NEW from the RJ Classics Summer Collection!

The RJ Classics Sienna Jr. Riding Shirt with 37.5® technology is the perfect schooling style for even our youngest of R.J. Riders. The patented thermoregulation technology has proven to help your body manage its core temperature and therefore, increase stamina. It 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 are naturally derived and work for the life of the product (it will never wash out!).


  • 37.5® thermoregulation technology
  • Main body fabric has UPF 50 sun protection
  • Mesh underarm panels
  • Machine washable

Colors: Navy/Hearts, Lavender

Children’s Sizes: XS, S, M, L, XL.


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