Keep the cold out with a lightweight, insulated sleeping bag designed for cold weather use, wind resistance, and easy transport. Tested temperature ranges are provided by model so you can choose the right weight and thermal performance for your needs. Key benefits Proven warmth: Multiple models tested across temperature ranges to match conditions from cool nights to extreme cold. Effective insulation: Down filling provides rapid heat retention and a soft, comfortable interior. Durable outer shell: density nylon is wearresistant, scratchresistant, and water resistant for outdoor use. Wind blocking and fit: Adjustable hood with elastic drawstring reduces heat loss from the head and blocks wind. Flexible use: Side sealed zippers allow smooth opening and closing, and two bags can be zipped together to create a double sleeping bag. Easy care and portability: Outer shell wipes clean or can be machine washed for simple maintenance. Lightweight and packable for travel and outdoor activity. Models and tested temperature ranges (weight and temperature) A 400g ( 3C to 10C / 26.6F to 50F ) B 6700g ( 8C to 5C / 17.6F to 41F ) C 1000g ( 13C to 0C / 8.6F to 32F ) D 1300g ( 20C to 5C / 4F to 23F ) E 1600g ( 30C to 10C / 22F to 14F ) F 2000g ( 30C to 15C / 22F to 5F ) G 3000g ( 35C to 20C / 31F to 4F ) Material and performance details Shell: Nylon fabric with a density weave for water resistance and abrasion resistance. Fill: Down insulation for compressibility, lightweight warmth, and a soft, quickwarming interior feel. Zipper: Sealed side zippers designed to run smoothly and resist snagging; fulllength opening allows ventilation and easy entry. Hood: Elastic and adjustable drawstring at the head area to limit heat loss and block wind. Maintenance: Outer shell can be wiped clean or machine washed according to garment care instructions. How to choose a model Select based on expected nighttime low temperatures and how much weight you are willing to carry. Lighter models suit milder conditions and pack down smaller. Heavier models provide greater thermal protection for colder environments. Use scenarios Cold weather camping: Overnight trips in fall and winter where reliable insulation and wind protection are needed. Backpacking and trekking: Compressible down fill and lightweight construction make the right model suitable for multiday hikes. Emergency or vehicle kit: Keep a compact, warm sleeping bag in a car or emergency kit for unexpected cold conditions. Additional features Can be zipped together with a second sleeping bag to form a double sleeping system suitable for couples. Designed for frequent outdoor use with long service life when cared for properly. Select the model that matches your temperature needs and carry preferences to ensure reliable warmth, wind resistance, and durability in cold conditions.