Here's what other sites are saying:
Eddie Bauer Midweight 1/4-Zip Baselayer - This next-to-skin midweight baselayer features Cocona technology that microscopically increases surface area and harnesses body heat to speed evaporation of perspiration during high-output activities. Said simply: moisture moves faster so you stay dryer. And Cocona never washes or wears out. It's embedded in the fabric. The most versatile of our Cocona weights, trust this midweight layer when skiing, climbing, riding or training in cooler temps.
- Eddie Bauer refers to the men's version