How does it work?
Polartec Power Shield Pro fabrics feature a smooth, tightly woven face for great abrasion resistance, and a polyester back for a high warmth-to-weight ratio. The membrane in the middle enables the fabric to block 99% of the wind. The remaining 1% circulates within the fabric which greatly enhances moisture vapor transmission, improving breathability and reducing the risk of heat stress buildup. Polartec Power Shield fabrics have the best breathability in the soft shell market. In fact, Polartec Power Shield Pro fabrics are 30-50% more breathable than windproof soft shells in dynamic or active conditions.
Highly Breathable & Highly Water-Resistant
The biggest advance of the new Polartec Power Shield Pro membrane is the addition of real water resistance, measured through a hydrostatic head. Polartec Power Shield Pro delivers an initial 5,000mm hydrohead (ISO 811, AATCC 127) and remains durably water resistant to a minimum of 3,000mm for life. This level of water resistance exceeds the requirement for seam sealing on a waterproof breathable shell (3psi or 2100mm) so you can be assured of its performance. The combination of water resistance and breathability of Polartec Power Shield Pro offers a great advance in soft shell comfort.