The Perfect Undershirt! Stanfield's Invisible undershirt has an innovative construction. Made of 94% micro modal and 6% spandex, this fine gauge jersey knit is so smooth fitting, it is unnoticeable under your dress shirt - even with one or two top buttons undone. This v-neck undershirt is moisture wicking and anti-microbial to keep you dry and feeling fresh all day long. Invisible shirts feature: longer sleeves, deep v-neck, fitted silhouette for a smoother look under clothes and narrow fit at hips to "stay in place" all day - Sizes S to 2XL - Machine washable and dryable .