- and that means your every day bag, weekender, and vacationer. It's fully waterproof with an adjustable hood and zippered pockets to keep your necessities dry. The breathable 10k/10k laminate and 4-way stretch make sure that you stay comfortable and dry on the inside, even when you're breaking a sweat. Most importantly, it packs into its own pocket - big performance, small size and perfect for travel. This year we've switched to a state of the art, non-fluorinated Ec-0 DWR ™ waterproofing treatment that eliminates the toxic byproducts found in traditional waterproofing technologies. Simply put, this is the most eco-friendly waterproofing on the market today.