Designed to be worn underneath a drysuit while kayaking, the Bomber Gear Women's Halo 5. 0 Top provides just enough insulation to keep you warm, without limiting mobility. The fabric is a 4 way stretch material that wicks moisture, increases insulation, and dries quickly. Polartec Power Dry panels along the underarms increase the breathability of the shirt, while an antimicrobial treatment prevents any funky odors from taking hold after a full day of intense paddling. And when it's time to kick back and relax back at camp, the Halo 5. 0 functions well as a standalone, too.