Arc’teryx has been making high performance clothing and sporting goods since 1989 with it’s central focus on climbing, skiing, snowboarding, and hiking related activities. For those curious minded readers out there, the name and logo refer to the Archeaopteryx, the earliest known bird and interestingly the most complete skeleton to date.

The Theta SV Bib has been designed to withstand even the most arduous of expeditions, with its waterproof GORE-TEX Pro Shell, high-waist panel and breathable inner lining.  The watertight ¾ length thigh zippers provide heat regulation and the adjustable suspenders ensure that the high-waist panel remain at a level where water or snow cannot get inside the trouser.

Another distinguishing feature about these are the durability of the material; Arc’teryx uses Schoeller Keprotec material found on the instep patches providing the most effective protection against sharp rocks and crampons. The material proves so durable because it is made with reinforced Kevlar fibres, enough so that it is extremely resistant to cuts and abrasions whilst not costing the trouser in extra weight.  The large cuff diameter is perfectly crafted for the compatibility with alpine boots, an essential asset for alpine use.

My experience testing these trousers has brought out the effectiveness of the products key features. I used the Theta SV Bib trousers and a pair of Icebreaker 200 Leggings skiing which served as an unrivalled combination for high altitude comfort. The warmth of the leggings along with the lightweight and waterproofing of the GORE-TEX outer shell meant that I was able to ski for longer in deeper snow, whilst retaining heat and staying dry.

Another feature that I have really appreciated is the tough instep patches. Whether ice climbing or winter walking, the need for protection here from crampons is a priority. I had a pair of Rab Bergen Pants, which I had used for ice-climbing and general mountaineering and although I cannot criticize them as they were excellent for their price, they developed tears in the instep due to crampon wear, something that can be avoided with the Theta SV Bib.

Useful Information

• UK RRP £350 | USA RRP $450
• Available in Men’s S, M, L, XL & XXL (click for sizing charts)
• Weight: 702g
• Check out the Arc’teryx Environment Statement.