Is thick hot?

May has come to an end and Japan is heading into the hot summer months.

So, is it better to have a thin T-shirt to wear in the hot summer?

TAG-T is made of 7.5 oz. durable thick fabric. So, is this TAG-T hotter?
The thick fabric does not stick to the body, but creates a moderate gap. This creates a pathway for body heat to escape, making it less likely to become hot. It also absorbs a lot of sweat and reduces the sticky feeling. Conversely, thin shirts absorb less sweat and become saturated quickly, resulting in stickiness and sweat stains.

Furthermore, thicker fabrics have the advantage of being less transparent. It is also impervious to sunlight. When you go outdoors from indoors, the sun's rays are less likely to penetrate through the parasol, which helps to slow down the rise in body temperature. It is the same as a thick parasol, which is cooler.

Conversely, when you come from a hot outdoor environment into an air-conditioned indoor environment, the thickness of the parasol also slows down the fall of your body temperature. In either case, it can be said that it is gentle on the body by moderating rapid changes in body temperature.

We conducted a comparison test between TAG-T of 7.5 oz. thickness and a white T-shirt of another company of 5 oz. thickness.
The comparison test was conducted after 17 minutes when the body temperature on the shoulder surface reached a plateau after going outdoors (sunny) at 31°C from indoors at 25°C. The temperature was continuously measured for a while after returning indoors. Compared to other companies' T-shirts, the TAG-T's body temperature rises and falls more slowly.

As an unexpected phenomenon, the body temperature of the other company's T-shirt rose rapidly, and the body temperature temporarily dropped due to perspiration during the process, resulting in two peaks.