Western Mountaineering Bristlecone MF Zipper:Left Zip Profile width of the 35mm

Profile width of the 35mm set: approx

These pants are made in a GORE-TEX PACLITE® PLUS fabric – a soft

ultra-compact version of our original Chair One

Exit Pupil 5 mm

Western Mountaineering Bristlecone MF Zipper:Left Zip Profile width of the 35mmBristlecone MF Extreme Warmth Meets Expedition Comfort When bitter cold and unforgiving conditions are part of the adventure, the Bristlecone MF delivers spacious comfort and serious warmth. Designed with a wide semi rectangular cut, this bag provides extra room to layer up, shift positions, or simply stretch outwithout compromising insulation. Packed with 850+ fill power goose down, it offers exceptional loft and heat retention, while the MicroLite