The Sierra Designs Cloud 35 Degree Down Sleeping Bag has oversized integrated comforter resembles all the comforts of your bed at home. Its' insulated shoulder pocket keeps comforter wrapped around you sealing out drafts. The sleeping pad sleeve keeps pad under you for comfort and warmth and replaces unnecessary bottom insulation. Other features include patent pending zipperless design for more comfort, patented self-sealing foot vent allows fast and easy ventilation, and PFC-Free 800FP DriDown and 15d nylon fabrics.