Warmth to 20 degrees and no worries about damp conditions with Climashield HL continuous-filament insulation the Wild Bill has journeyed around the world adapting to any environment with its synthetic insulation and minimalist design. Pad Locks keep you sleeping happily atop your ground pad while Snag Free Zipper Tracks won't trap you inside the bag when nature calls. We build the Wild Bill with the same ergonomic hood as our more expensive models use a draft tube for warmth and this season it's offered in two new color options. Click on Images to the right to see both options. Fully featured the Wild Bill relies on a draft tube to seal out the cold.