Common materials for underwear include 100% cotton, modal, ice silk, bamboo fiber and so on.

Ice silk fabric means meryl fabric.

Ice silk is a kind of underwear fabric that has become popular in the past two years. It is a kind of nylon, also called rayon and viscose. The material of the underwear is based on these kinds of fabrics, and then spandex or other materials are added to improve the comfort of the underwear.

For example:
Pure cotton + spandex, modal + spandex, meryl + spandex.

Personally recommend choosing meryl underwear when exercising.
Because the moisture absorption and air permeability of the CK underwear of ice silk will be much better than ordinary ones, and it is light and thin, has drape, is not easy to deform, and does not shrink after washing.

There is also ice silk underwear with antibacterial material in the bottom crotch, which is not easy to breed bacteria and odor, which is healthy and environmentally friendly! The meryl boxer shorts, meryl boxer briefs,meryl briefs also has a larger elasticity. If you like a looser one, you can wear a larger size. The bottom crotch chooses a U-convex pouch, which has plenty of space and is not stuffy.

More experience and thoughts, welcome to share with us！