Warmth where you need it and breathability where you need it. The Patagonia Capilene 4 Pro Boot Pants might as well read your mind and bring you beer too. Capilene 4 fabric panels for breathability are paired with R1® fleece through the seat and knees for warmth in all the right places. The boot cut length ensures compatibility with your gnarly boots, so that when you need to gas, break, dip, and shred that spine line, you have no excuses.