Whether you ride pavement or dirt, hot weather is hot weather, and it can suck your energy faster than a never ending climb can not that we're recommending you stay inside when the temperatures soar. Riding in the heat can be great training, as long as you have gear that's designed for it, like Sugoi's RSX Jersey. Made with a stretchy, breathable polyester blend, the jersey's relaxed fit follows your body movements as you dice through rocky singletrack without feeling tight or constricting when you need to sit back for a descent. It also expertly pulls moisture away from your skin so it can evaporate at the surface, drying quickly rather than clinging to your body as you try to ride. You'll want plenty of ride nutrition with electrolytes if it's a hot day, and Sugoi gives you plenty of room to store what you need in two roomy rear pockets at the back of the jersey.