In the sport of cycling, simple can be just what you need to ride your bike. The ASSOS SS.Uno is a short-sleeve jersey, with a non-restrictive, form-fitting cut, made of breathable Plasma fabric weighing only 135 grams! You can slip into the jersey, then zipper up from bottom to top, and you’re covered by a jersey that is perfect for warm rides. The meshed armpits evaporate sweat and the spandex shoulder fabric connects the jersey with your body and keeps you dry and aero. This jersey has a UV Protection rating of 50+ to protect you from harmful sunrays and reflective visibility stripes to protect you from careless motorists. To use the SS.Uno over a greater temperature range, try wearing the ASSOS Interactive bodyInsulator underneath.