Here's what other sites are saying:
This fast wicking and quick drying Polartec® Power Stretch® top is designed as a midlayer or warm base layer for all high energy mountain activities.
- GearX.com refers to the men's version
The PS Zip Top is a polartec power stretch fleece top that is designed for alpine climbing, mountain trekking and fast and light adventures.
- CampSaver.com refers to the men's version
On Sale. Free Shipping. Rab Men's PS Zip Top FEATURES of the Rab Men's PS Zip Top Polartec Power Stretch fabric YKK deep venting chest zip, chin guard Flatlock low bulk seams High collar Thumb loops 1 YKK zipped chest pocket Slim fit SPECIFICATIONS of the Rab Men's PS Zip Top Weight: 13 oz / 360 g 230g/m2, 88% Polyester, 12% Spandex This product can only be shipped within the United States. Please don't hate us.
- Moosejaw refers to the men's version