The Cirque, Sun Mountain’s top peak rain collection, is extremely lightweight, waterproof, quiet and breathable due to its three-layer construction. The waterproof/breathable membrane has a 20K waterproof rating and an elite 50K breathability rating. The bonus is the level of 4-way stretch in this fabric. Rarely with ratings like this will you have a piece that combines all the attributes of the Cirque: featherlight, waterproof, breathable, 4-way stretch, quiet, windproof and ultimately, playability. Sun Mountain prides itself in providing the most playable rainwear on the market. Cirque is setting the new bar. Two-year waterproof guarantee.