Klymit Wild Aspen 20 Sleeping Bag (Green)The Wild Aspen 20 is thoughtfully designed for three season comfort. The bag features synthetic insulation for an exceptional warmth to weight ratio. Lightweight and durable micro polyester shell is water and abrasion resistant, while the inner liner is designed to retain warmth. Featuring a fully adjustable mummy hood and a built out foot box for extra comfort. Zipper draft tube ensures the cold air stays out so you sleep soundly all through the