The main feature of an ultralight sleeping bag is that it is very light.It is very convenient to carry, especially suitable for backpackers and long-distance hikers. This type of sleeping bag is usually designed to compress into a very small volume, making it easy to pack and carry without taking up too much space in your backpack. Despite their small size and low weight, ultralight sleeping bags often feature highly effective insulation, making them the best year-round sleeping bags-for spring, summer, fall, cool weather, and more. Stay comfortable, warm and safe. It can achieve the best warmth and insulation effect, protecting you from the bad weather. Strong adaptability: Due to its light weight and easy to carry, this type of sleeping bag is very suitable for outdoor activities that require fast movement, such as hiking and mountaineering, and is also suitable for use in limited camping space. Colour:F:Camouflage Material:Polar Fleece Package Contents: 1 x Portable ultralight sleeping bag