If the thought of high passes and brilliant snow capped views in the Sierras or Rockies make you smile, chances are you require maximum protection from your 3 plus season bag. Batten up the hatches and pull out your Western Mountaineering Antelope MF as the sun sets over the peaks. You won&';t think twice as you pack this just 2 lbs 7 oz, the Antelope MF provides warmth down to an astounding 5 degrees. MicroLite XP shell is very weather resistant while remaining extremely breathable A slightly over-sized winter fit ensures comfort when extreme weather necessitates an extra layer or two A full 3-dimensional down filled collar seals in heat Enjoy easy ventilation with a full-length #5 YKK Coil Zipper featuring two locking slider pulls for convenient access from inside or outside the bag Dacron stiffening tape ensures smooth zipping and prevents zipper jams Robust insulated draft tube keeps heat from escaping through the zipper 7&';&'; L