Tommy John Men's Second Skin Tank Undershirt 90% Modal, 10% Spandex Imported Machine Wash Super-thin micro modal fabric - as soft and luxurious as silk Memory collar - prevents bacon neck Streamlined fit - hugs the body but never restrictive No EFG - longer, tapered design eliminates excess fabric gut Stays tucked - patented design never comes untucked, 90 percent non-pilling micro modal, 10 percent spandex