Sleeping bag is the bag used when sleeping, most of the sleeping bags in the market have the logo of comfortable temperature and extreme temperature, comfortable temperature is a series of temperatures in the user sleep all night, with the highest and minimum, generally the sleeping bag is zipped open, arms outside, the sleeping bag head is not tightened, etc. Teencher Inspection  team consists of professional quality control and international trade experts, each memberwith extensive inspection experience and very strong sense of service. our inspection can help you to reduce logistics costs, return risk, complaints, compensation and potential brand reputation due to quality problems.