Engineered for superior comfort and performance, the FlexTech Mockneck combines thoughtful design and innovations to provide an unparalleled base layer. A blend of cotton and spandex, the 4-way stretch fabric provides outstanding range of motion, comfort and fit whether it's worn against the skin or over body armor. Permanent Nano Moisture Wicking and antimicrobial technologies help ensure you remain dry and fresh for the life of the shirt.