The Shivling Jacket is an exceptional year round piece crafted from the superb Gore-Tex Pro fabric; breathable, lightweight & waterproof. So whether you are walking, hiking even mountaineering, this jacket is lightweight & low bulk enough that you can always carry it just in case. The 40 denier Gore-Tex Pro fabric can take quite a bit of abuse as the face fabric itself is made from the ever so durable Nylon. Its mountain HC hood isn’t made for extended helmet use but it does accommodate a helmet at a squeeze if you need it to, adding to this jackets overall versatility. The close Alpine Fit will allow layers underneath but it is designed to reduce the amount of dead space between layers & eliminate excess material. If you get too hot M.E. have popped in some pit-zips for when need to cool off quickly, which saves you stopping to delayer & losing all your momentum. 3-layer GORE-TEX® Pro 40D fabric Mountain HC Hood is fully adjustable Womens Alpine fit with articulated & pre-shaped sleeves 2 large pockets with YKK® WR zips Inner zipped security pocket 2-way YKK® moulded Aquaguard® centre front zip YKK® underarm WR pit zips with laminated & bonded entry Adjustable laminated cuffs & dual tether hem drawcords 100% Polyamide outer/inner, PTFE membrane For all you kit geeks out there, the links below will take you to Mountain Equipments Information pages where they will explain this jackets different fabrics, fills & constructions techniques in greater detail. Gore-Tex Pro Alpine Fit YKK Aquaguard Zips Dual Tether Hem Drawcords Most people are scared to wash & reproof their outdoor jackets, but like all equipment it does need to be maintained. It is actually really easy! Feel free to give the shop a call from 09:00 until 17:30 Monday to Saturday (19:30 on a Wednesday), as we are always happy to help & give friendly advice. Or if you are reading this outside our normal opening hours here is a useful link to Trekitts recommended product for washing & caring for kit. Nikwax Tech Wash Nikwax TX-Direct I hope this helps.