Nylon Imported Keep Warm: Backpacking sleeping bag Filled with 3.3lbs 600 FP premium duck down, comfort temperature 17.6°F- -0.4°F, limit -11.2°F. Double zipper design prevents cold air, added chest insulation for better warmth Lightweight & Portable: The ultralight sleeping bag Weighs only 4.72 lbs, pack size 17.32"x8.66", lighter and more compact than polyester sleeping bags. Perfect for camping, hiking, and other outdoor activities Large Space: Semi-Rectangular shape fits the head, 88.58"x31.5" size, foot zipper for ventilation, more spacious than standard sleeping bags. Can combine two bags into a double sleeping bag Durable & Long Lasting: Down sleeping bag Made with 400T high-density nylon, moisture-proof, tear-resistant. High-quality zipper, even down distribution, dense stitching prevents down leakage Aftermarket: QEZER always provides our customers with the sleeping bag products and services. If you have any product questions, please contact us, we will respond sincerely and do our best to keep you satisfied HOW TO USE:1. Open the storage bag and take out the sleeping bag2. Put the bag on the ground3. Remove the zipper on the shoulder of the sleeping bag4. Lie in a sleeping bag5. Close the zipper and tighten the lanyard6. Apply Velcro7. Open the sleeping bag and unzip it from the inside8. Fold the sleeping bag, roll it up and put it in the storage bag.9. Tighten the straps on the outside of the bag by hand to make it compact and compactPRECAUTIONS FOR USE:1. One or two days before outdoor sports, fully unfold the sleeping bag to fully demonstrate its thermal insulation performance in the wild. Put the sleeping bag into the compression bag before departure.2. When camping, if time permits, it will be easier to dry the sleeping bag outside, in a tent or in a dry, ventilated and sunny place in the morning, but avoid strong sunlight.3. When storing, you can rotate the sleeping bag once to squeeze out most of the air, then unfold the sleeping bag and put it into the compression bag irregularly from the end.4. The fabric of the sleeping bag is waterproof and tear-resistant, but if it rains heavily on the way, use a plastic bag to prevent moist air from entering the sleeping bag.