They reduced weight without sacrificing durability or warmth. The Women's Terra Peak Hoodie is made for those who don't let an uncertain forecast get in the way of their plans. We've used ThermoBall™ insulation for reliable warmth (even when wet) and abrasion-resistant Pertex® Quantum for loft and enhanced thermal performance. Engineered for mobility, the fabric's four-way stretch allows you to move, without restriction towards your next objective.