Product Description Men's World's Warmest Jacket The World’s Warmest Jacket The MegaWarm jacket is the ultimate LifeLabs innovation, giving you the warmth you need at the top of a mountain or on the coldest winter days in the city. Fully waterproof and remarkably light for its scale and coverage, the MegaWarm Jacket defies common standards for insulated apparel. With the highest CLO rating of any jacket in existence (9.25), MegaWarm is the planet’s warmest jacket. Why we like it * Warmest jacket on Earth, with a CLO rating of 9.25 (38% warmer than the Canada Goose Snow Mantra) * Ultra-packable and lightweight; exceptional freedom of movement * Fully waterproof yet still breathable * Less overall environmental impact using much less material to keep you warm * Uses ethically sourced goose down