The ULTRA-PAK™ Jacket is exactly that! The ultimate light weight waterproof & breathable shell, weighing only 7 oz. The “UP” is designed for ultimate self packability. Perfect for the golf bag, backpack, or boat locker. Made with Hydropore1.5™ breathable technology, the “UP” is High Tech Comfort and Performance at a terrific value. It’s like nothing you’ve ever worn before.