The sitip airblockreg front panel used in this air out jersey has an ultracompact weave keeps out up to 78 more air than conventional fabrics without compromising breathability complementing this windproofing is the acquazeroreg treatment also on the front panel that keeps the fabric water resistant for the first 60 minutes of wear also without affecting breathability with its highly breathable stretch mesh on the back you get a protective jersey that is also very