Spacious Size and Suitable Temperature: This ultralight sleeping bag measures 220 cm long x 75 cm wide and includes a hood, making it comfortable for most adults. Its recommended temperature range is 5°C to 20°C, but specific temperatures may vary depending on weather conditions and individual clothing or gear. Hook and Loop Fasteners: Extra hook and loop fasteners help secure the zipper and prevent heat loss through the top of the zipper. Multi-Functional Zipper: This envelope-style sleeping bag features zippers on both sides, running the length and width of the bag. If you feel too hot, you can unzip it for ventilation; or unzip it completely to use the sleeping bag as a large blanket. Multiple Sleeping Positions: Envelope-style sleeping bags can accommodate almost any sleeping position. Rectangular sleeping bags offer greater freedom of movement and multiple sleeping position options. Popular Choice: Rectangular sleeping bags are a popular choice for road campers. You can bring a rectangular sleeping bag to the campsite; this warm and spacious sleeping bag is suitable for families and road campers.