I have the Fieldsheer 4 season Mesh pants for warm and cold weather. With the liner in I have ridden as low as upper 30s/lower 40s comfortably (hands is another issue). And without the liner and shorts underneath they're a lot cooler than the shift jeans I have. I took the knee pads that came with them out and use the Icon knee armor instead. I just throw them over my khakis I have to wear for work when I commute...
