Marmot NanoWave 45 Long Sleeping Bag SpiraFil High Loft Insulation,Compression Stuff Sack Feely Draw Cords - Ease Nighttime Cord Fumbling Snagless Draft Tube - Has Heavy Oxford Cloth to Repel Biting Zipper Coils Two Way Zipper Sliders - For Venting and Mating of Bags Reversible Slider Tabs for Easy Use Inside or Outside of Bag.