And the versatility is truly unbeatable: A long-sleeved T-shirt can be layered under itchy sweaters or lightweight cardigans and, of course, worn on its own, whether for hitting the gym or running ...

The Rabbit EZ Tee long-sleeve shirt is made from classic moisture-wicking ... while running to prevent riding up or too tight with layers under it. This top is made for those cold and dark winter ...

With the right long sleeve workout shirt, however, those bulky layers won't be necessary. The long-sleeve workout shirt is a controversial clothing item: You either love it or you hate it.

The Racer 2 base layer is another strong and sensibly priced piece of kit from Decathlon's in-house brand Van Rysel ...

It reminds her of the long-sleeve T-shirts (that were technically long underwear) she grew up in. These “set the baseline” for what Citrin-Safadi still looks for in a long-sleeve T-shirt ...