We traversed 46 miles of Costa Rican rainforest to ensure this jacket can stand up against rain, wind and humidity. As we went, we saw the Morpho butterfly—the namesake of this jacket. In addition to windproof and waterproof technology, we designed this layer with a loose fit and adjustable openings to make it ideal when the storm rolls in. And when the rain clouds pass, just pack it away in the included pouch.