Multipurpose design: a single sleeping bag for camping, hiking, backpacking and indoor rest. Provides a warm, comfortable place to sleep outdoors and can also be used as a sleeping pad when resting indoors or in the office. Why you need it: keeps you warm across different seasons, reduces the need to carry multiple sleep systems, and doubles as a pad for quick, convenient rest anywhere. Clear temperature guidance: Size S: comfortable for temperatures between 15°C and 20°C — ideal for spring and autumn use. Size L: comfortable for temperatures between 0°C and 5°C — suitable for autumn and winter outdoor camping. Size and weight: S: weight 0.95 kg — lightweight option for milder conditions and shorter trips. L: weight 1.6 kg — heavier, warmer option for colder conditions and longer stays outdoors. Key functions and benefits: Warmth and comfort: designed to provide reliable insulation at the listed temperature ranges. Versatile: usable as a sleeping bag outdoors and as a sleeping pad or rest mat indoors. Practical for travel and field use: two sizes let you choose the balance of weight and warmth for your activities. Practical use scenarios: Weekend backpacking in spring or autumn: choose Size S (0.95 kg) for lower weight and comfortable nights at 15–20°C. Coldweather camping or autumn/winter trips: choose Size L (1.6 kg) to stay warm in 0–5°C conditions. Office or indoor rest: use the sleeping bag as a compact rest mat for naps or quick recovery between activities. Specifications at a glance: Models: Size S and Size L Temperature ranges: S = 15–20°C; L = 0–5°C Weights: S = 0.95 kg; L = 1.6 kg Functions: outdoor sleeping bag, indoor sleeping pad the size that matches the temperature conditions and weight you need to ensure comfortable rest whether camping, hiking, backpacking, or taking a break indoors.