The North Face Potosi Jacket: An Alpine Fit and HyVent Alpha fabric combine to knock out high aerobic ascents with ease. Waterproof, breathable, and fully seam sealed The North Face Potosi Jacket rushes upward and onward with new body-mapping technology for maximum thermal regulation and comfort. Outfitted with an attached and fully adjustable helmet-compatible hood this alpine jacket from The North Face reinforces your outer defenses and emphasizes safety. Extreme conditions are no match for the Potosi Jacket.