The Best Undershirts are from Mack Weldon!  Their 18-Hour Jersey collection is a must for year round comfort.  Their insanely soft fabric is named for an 18-Hour resting process the fabric goes through before they even start sewing.  This creates a soft comfort fit for everyday use.

The Extra-Length Crew Neck undershirts are Slim Fit for a perfect look when tucked in.  With their "Lie-Flat" collar and Ergonomic Seaming, it creates a smooth base for your shirt (and is Tagless for comfort).  

Designed to work with their for a perfect combo.

47.5% Cotton, 47.5% Modal, 5% Spandex