Mack Weldon's 18-Hour Jersey collection is renowned for year round comfort. Fabric is specially processed in an 18-Hour resting period for optimal softness and comfort fit. Further, the Extra-Length V-Neck undershirts come with a Slim Fit for a polished finish when tucked in.

Their "Lie-Flat" collar and Ergonomic Seaming combine to ensure a smooth base layer with a tagless design for maximum comfort. All this ensures the 18-Hour Jersey collection works as an ideal undershirt.

for a perfect combo.

47.5% Cotton, 47.5% Modal, 5% Spandex