Very light and water proof

These are great light weight rain pants. They breathe pretty well, and do a great job of keeping you dry, but they are more of a trail pant. I shredded mine bushwhacking, they now leak like a sieve, and that hurts at $200 a pair. I am 6' 5", 40" waist, weigh 275 lbs, and the knees are not cut right, considerable binding when going uphill.

Typical Arc'teryx quality seams, and overall finish, but the waist drawstring adjustment slide is completely bogus. The designer must have thought it would be cute to make it small, and hard to work with numb fingers. They lose two stars for that, and the price.

I cannot believe I haven't reviewed these sooner! I bought these from BC about a year ago. They have fantastic construction from the sealemd seams, to the measurement and sizing. I am 5'8 150 athletic build, waist 32 and the M was perfect. In fact Arc'teryx desgined these pants to be big enough in your normal size that accomadates for putting these over another layer. So I recommend sticking with whatever normal size you wear. Performance wise I used these in a tropical storm with high winds heavy-sideways rain and was dry as a bone. I also used these in about 8 inches of snow as my outer layer because I lost my insulated ski pants, but with some base layering, these pants were amazing, again dry as a bone, I sat in the snow and rolled around too, I was impressed. Lastly, if you're not convinced yet, I used these to cross a river in the Shenandoah Park, granted it was about 2-3 feet deep (thigh high), but I put these on and made sure my boots were ready too and headed across, again bone dry, I felt the cold of the fall water through them but no water made it through anywhere. Overall, buy on sale if you can I did about $130, but they are worth every penny, a must have in your outdoor arsenal!

These pants are the bomb. I wore them on a recent backpacking trip where we were hiking in a constant rain for 10 to 12 hours with temps in the mid 30s. They were totally dry, light, and fended off light briers and sticks without a scratch. I initially went with the XL to go over my pants, however, later I decided if I am going to wear these I'll just take my pants off because the LT was a much better fit for hiking in. I am 6'4", 215 with a 36" waist and the XL just kept falling down and the crotch was way too low to hike in.

I love these pants, they are flexible and they fit great! I use them primarily for ice climbing and they have performed awesome! They weigh nothing so when you pack them away they take up no space and ad hardly any weight to your pack.