In town, at work, on and off the job.
Men should not let their underwear show through their outerwear.
It is generally said that opaque underwear is beige.
If you're not sure which beige underwear to choose...
"in.T" is an innerwear designed specifically for T-shirts, designed to help you wear your T-shirts stylishly. In addition to being sweat-resistant (prevents sweat stains, sticking, and dirt), it also features a wide round neck that prevents the innerwear from protruding from the neck. Of course, it is CUT OFF® so it is not easily visible under outerwear. This innerwear designed specifically for T-shirts will help you wear your T-shirts stylishly.
*Excerpts from reviews of YV2618P, YV1577P, and YV1578P *Personal opinions

Anyway, this is recommended for those who are troubled by underarm sweat!!
The sweat pad has been enlarged, providing 3.4 times * the absorbency!
Even people who sweat a lot can rest assured!
Comparing YV2618P (current product) and YV2819 (new product)
YG/Innerwear for T-shirts
Sleeveless with sweat pad
YV2819

It is generally said that the color of underwear that is close to the skin tone is beige and not see-through.
But is that really true? For some reason, it seems like white underwear is the least likely to show through with a white Y-shirt...
We'll compare the transparency of underwear worn under a dress shirt! We've prepared a white dress shirt and underwear in a beige, regular white, and a casual, easy-to-wear heathered black.


Hmm...you can clearly see the boundary between the skin and the underwear.

It looks less noticeable than white, but you can still see the boundary.

Oh! Although you can see the edge of her underwear due to her position, the color doesn't appear to be see-through!
As a result of our research, we found that the color that is the most opaque when worn under a white Y-shirt is "beige"! There are many types of beige underwear. Please choose the most suitable innerwear for the scene and your purpose.