Immersion Research Short Sleeve Thin Skin Rash Guard
Here's what other sites are saying:
When you're looking for a bit of light insulation and sun protection on the water, then grab the Immersion Research Thin Skin Rash Guard for Men. This short-sleeve top is made with a four-way stretch fabric that wicks moisture away from your body and won't inhibit your paddle strokes when worn alone or under a dry top. Flat seam construction prevents chafing under your PFD, while sun and wind protection will be a welcome addition when you are spending late afternoons on the water.
- Backcountry.com refers to the men's version