The Stormchaser fabric has a 10K waterproof rating, which means that it can withstand 10,000mm of water per square inch from the outside, and release 10,000g of water vapor per square meter from the inside. The jacket features moisture-stopping sealed seams throughout, protective interior and exterior pockets, and adjustable cuffs to keep your valuables dry no matter how heavy the downpour. This jacket is perfect for those looking for a stylish and practical option for their wet weather wardrobe.