The North Face Women's Ventrix Hoodie is designed for pushing vertical on technical hiking and climbing routes. This lightweight active layer features 80g of synthetic Ventrix™ insulation that was developed for exceptional breathability, movement-mirroring stretch, and wet weather performance. The stretchy face fabric also enhances freedom of movement and is reinforced through the forearm for extra durability while navigating rocky terrain. A matrix of pinhole vents at the upper back and under the arms open up as you're fast on the move and allow excess body heat to escape. The slim fit keeps out of your way while moving fast or wearing a harness, and makes it a comfortable midlayer under a shell if extreme weather hits.