Aubrion Ladies Team Short Sleeve Base Layer Navy. Join the team with the Aubrion Ladies Team Short Sleeve Base Layer. Perfect for layering during the colder months or wearing alone on those warmer days, the Team Base Layer is made from a luxuriously comfortable fabric that will keep you looking and feeling fabulous all day long. Combining both a luxurious equestrian style with practicality, the Team Base Layer features a quick-drying fabric with UPF50+ to protect you from the sun, 1/4 zip, flatlock seams and complete with the iconic #teamaubrion branding.