The contents in hope of temperature control by the clothing are included in a life action aiming at the reduction of the recent CO₂ discharge. In schools, the study of clothing material properties is not included in the “how to wear” part of the curriculum. The tendency to overestimate the clothes using the new material is recognized in guardians as well as their children.

This report suggests a method to identify the increase in temperature by measuring the moisture absorbed by different clothing materials, thus providing a way to determine the proper clothes to wear in the winter season. Five kinds of plain-weave materials—cotton, wool, rayon, nylon, and polyester—and three kinds of knit materials—cotton, wool, and a new material for winter clothing—were placed under different conditions of temperature and container capacity, and then, the changing temperature corresponding to the moisture absorbed was determined.

The temperature change corresponding to the quantity of moisture absorbed by cloth fibers were determined, and the reproducibility of the method was also confirmed. The measurement precision confirmed the effectiveness of this method of qualitative measurement.