Arc'teryx - Alpha SL Jacket - Waterproof jacket tested

I have an Alpha jacket already and bought this is a lightweight option. It is incredibly light. Incredibly simple design. I also had an earlier incarnation of the alpha SL (10+ years old), and it was much heavier and thicker. This is alarmingly thin and light by comparison. However, it is claimed to be robust. Remains to be seen how tough it is. If it stands up, it will be ideal for easier alpine mountaineering and via ferratas. Definitely not tough enough for thrutchy winter climbing.