Here's what other sites are saying:
Eddie Bauer Expedition Weight Baselayer Crew - Brand new for 2011, our warmest next-to-skin expedition weight 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 raised grid construction trims bulk while delivering superior insulation to keep you warm in colder climates or during slower-moving activities like winter camping, expedition climbing or lift-accesses skiing. In milder conditions, it doubles as an outer layer. .
- Eddie Bauer refers to the men's version