Within the Base Series, the H1 Zip Top is the warmest base layer on the market. Polartec Power Stretch Pro is a unique a fabric with infinite stretch, extreme next-to-skin comfort in the soft fleece, and strong abrasion resistance on the outer face fabric. With a fabric weight of 312 g/m2, we built this to provide the needed warmth to last long into the coldest winter days.
- 312 g/m2 Polartec Power Stretch Pro fleece that offers a high CLO value
- 16-way stretch
- Advanced dual-surface knit construction
- Wicks moisture
- Fast drying
- YKK zipper for dumping heat when needed
- Raglan sleeve for full-range mobility