For sportswomen looking for a cool layer, the WISP VEST W from Rab is a women's tank top that allows free movement in hot weather.
Featuring a looser, more feminine fit than a traditional base layer, this top is made of recycled polyester fibers and open mesh fabric with an antibacterial Polygiene finish. It keeps you cool and comfortable, and the low-volume seams provide added strength and softness.
It also features Stay Fresh technology that allows you to wear it several days in a row thanks to odor control.