About this item - Premium Warmth: Filled with 600 FP premium duck down, this sleeping bag provides excellent insulation. Comfort temperature range: 45°F-61°F, limit 36°F. Double zipper design prevents cold air infiltration, and added chest insulation ensures you stay warm even in chilly conditions. - Ultralight & Compact: Weighs only 1.68 lbs, packs down to 9.84" x 5.51". Much lighter and more compact than polyester sleeping bags, making it ideal for backpacking, hiking, and camping. - Spacious Design: Semi-rectangular shape offers generous space for your head and body. Dimensions: 85.04" x 31.5". Foot zipper allows ventilation, and two bags can be zipped together to create a double sleeping bag for couples. - Durable Construction: Made with 400T high-density nylon that is moisture-proof and tear-resistant. High-quality zipper, even down distribution, and dense stitching prevent down leakage, ensuring long-lasting use. - Versatile Use: Suitable for all seasons, especially spring, summer, and fall. Perfect for outdoor adventures like camping, hiking, backpacking, and travel. - Customer Satisfaction: We are committed to providing high-quality products and excellent service