The Bora pant without a base-layer i would probably say would be ok between that 35-55 degree range - with a good base-layer between 35- 15degree range. These pants weight 24oz according to Kryptek no knee pads though. The water resistance is so good on these it will not even required you to have rain pants I would still carry some just in case, they have the schoeller fabric which is the best in the industry they shed water like no other pants. The only reason why they are not called waterproof it’s because the seams are not taped. Unless you are hunting in Alaska where it’s raining everyday or on a fishing boat where you are constantly wet you will not need waterproof rain pants. These will do the job in other normal conditions where you encounter rain here and there. The material seems super durable and the fabric breathes like no other let’s hot air out and closes when cold outside. The fit is not as athletic as Sitka or Kuiu from waist down to the knees they are fine, the bottom part of the pant from the knee down to the ankle it’s a bit loose, I would recommend gaiters at the bottom to fix this issue. I am 5’6, 160 lbs the 32x32 firs perfect on the waist but they are a bit long for me. Will definitely be using gaiters, for someone taller would be perfect in length.