Micro mesh is a cotton or polyester based fabric that has tiny micro holes. These micro holes ventilate you. Therefore, the mesh keeps you cool and dry for longer. This makes micro mesh a great material for underwear and clothing in warmer climates or for the active guy.
Micro mesh underwear is breathable, helping to wick away moisture. Therefore, it helps to reduce sweating and is generally healthier. The underwear can be cotton based, for a softer feel. Or it can be polyester based, which is more cost effective. But it will have the same breathable, ventilating and moisture wicking characteristics, keeping you cool and dry.
PUMP! offer a great range of mens underwear with mesh to the pouch or whole body. Their underwear is made with a soft cotton to provide the ultimate soft comfort, whilst also cooling you.