The Rab Men's Boreas Pull-On is a lightweight stretch pull-on designed to offer protection from the sun & the elements when in the mountains. The Boreas Pull-on has been designed to offer fantastic sun protection when climbing or travelling in mountainous areas. The fabric does also offer some wind resistance but this does not compromise breathability & makes the Boreas a fantastic mid layer for both warm & cold conditions. Features Polygiene STAY FRESH odour control treatment Under helmet hood Deep venting YKK chest zip 1 YKK zipped chest stash pocket Flatlock low bulk stretch seams Open cuffs Weight/m: 131g/m Comp: 86% Polyster/ 14% Spandex