There are many fabric style could do men underwear or women underwear for your choose,which one is most comfortable to wear is determind by personal preference.

Westfox use several fabric for your reference as below:

Cotton:soft and elastic, which can significantly improve the wearing comfort and the added value of the product. Calvin Klein Underwear made from this cotton fabric has many characteristics such as high elasticity, softness, comfort, moisture absorption, breathable, smooth, easy care and so on.

Modal:It is a semi-synthetic fibre that’s found fame in the age of activewear. … Modal is one such fabric. This modal fabric is breathable and absorbent CK briefs.

Bamboo fibre:Soft and warm, antibacterial, moisture absorption, environmental protection, anti – ultraviolet, natural health care, comfortable and beautiful for underwear,t shirt,and so on.

Meryl:soft,sun protection,heat preservation,cool and breathable,easy clean.

These fabrics are could do for boxer shorts,briefs,thong,g string,jockstrap,c string,lingerie,knickers, activewear,tops ,bottoms and so on.