Outdoor Vitals sleeping bag liner is mummy shape, weighing 7 oz and Size: 83" x 33". Excellent condition, only used once and washed. Included drawstring bag. Fabric: Premium, quick drying micro Polyester. Outdoor Vitals Sleeping Bag Liners are made with premium micro polyester fabric to ensure high levels of durability. The fabric wicks away moisture and dries extremely fast in case you sweat during the night or get into the liner wet from crossing a stream! The extra layer of insulation also is great for adding a few degrees of warmth to the bag or allowing you to vent while not completely freezing that section of your body! At a weight of only 7oz it’s well worth packing to keep you cleaner, dryer, warmer and give you that extra comfortable feel of home!