The Halo series offers the ultra-light option for extreme weather. Designed as asuper packable option for when the weather takes an unexpected turn or for use when things cool down or get wet. The Halo Jacket and Trousers pack down incredibly small and weigh next to nothing, so you will barely notice theyre sitting in the bottom of your pack. But when theyre needed, they are extremely waterproof and breathable, just like your traditionally heavier and bulkier work-horse rain layer. Unlike a lot of back-up style rainwear, the Halo series was designed with all the important features you still need including a longer cut jacket, athletic cut, multiple pockets, sculpted hood and many more. Both the trousers and jacket pack down tiny into their own pockets when not in use so they can disappear into the bottom of your pack.10,000mm waterproof rating.6,000gm/m2/24hr breathability rating. - Weight Sz M: 525 grams. - Waterproof and breathable 3 layer fabric. - Half-length zip with domed storm flap. - Seam-