The simple Hunter Kids competition jacket is particularly breathable thanks to the mesh fabric inserts. As there is a zipper under the button placket, the jacket can be put on and taken off quickly.
 
tailored fit
hidden zipper behind button bar
outer fabric: 70% polyamide, 23% elastane, 7% polyurethane, mesh: 88% nylon, 12% spandex
machine washable cold water