The Halo offers the ultra-light option for extreme weather. Designed as a super packable option for when the weather takes an unexpected turn or for use when things cool down or get wet. The Halo Jacket packs down incredibly small and weighs next to nothing, so you will barely notice it's sitting in the bottom of your pack. But when it's needed, it's extremely waterproof and breathable, just like your traditionally heavier and bulkier work-horse rain layer. Unlike a lot of backup style rainwear, the Halo was designed with all the important features you still need including a longer cut jacket, athletic shape, sculpted hood and many more. It packs down tiny into its own pocket when not in use so it'll disappear into the bottom of your pack.