The new Ventus is the hood-less version of the incredibly popular Boreas made with Rabs fantastic SWS (Single Weave Stretch) softshell fabric. This lightweight softshell fabric will keep out wind, light rain & nasty UV rays making it perfect for aerobic mountain activities. It works best when worn over a good base layer when you are working very hard & just need a thin layer to keep off the elements. Alternatively you can throw it over a mid layer when you need a lightweight, comfortable windproof. The fabric is treated with Polygiene, a naturally occurring antimicrobial agent that lasts for the life of the garment. Polygiene is completely safe next to the skin & is environmentally friendly. If you can bear to take the Ventus off it can be stashed in its own chest pocket. The minimalist design is finished off with Lycra bound hem & cuffs with thumb loops to protect the vulnerable wrist area. Lightweight SWS fabric Polygiene treated to control odour Deep venting YKK chest zip YKK zipped chest pocket that doubles as a stuff pocket Flatlock low bulk seams Lycra bound cuffs with thumb loops Lycra bound hem Slim fit