Páramo's reversible base layer has (a whole lot) more technology than your typical T-shirt.
For a start, the material is designed for more or less cooling thanks to two different 'faced' sides - a smooth one that attracts water and a honeycombed side that traps air. It's not that easy to discern a difference, though whichever side I had it on, the Cambia wicked sweat exceptionally well and kept me dry and comfortable.
Techiness aside, the cut is what stands out most for me - it's tailored for women and perfectly proportioned. It's body skimming without being too tight and the length is perfect to wear either in or out without bunching up. The sleeves too are a good length and there's no restriction around the armpits.
The ideal base layer year round, the Cambia's also very light, packs down to almost nothing and dries exceptionally quickly - making it perfect for wearing and washing over and over when on tour.