The Baselayer

Size Guide
Manual size guide
 
Chest Neck Sleeve
Small 37" 14.5 32/33
Less Medium 38" 15 33/34
Medium 39" 15.5 33/34
More Medium 40.5" 16 33/34
Large 42" 16.5 34/35
Extra Large 45" 17.5 35/36
Final Sale - due to COVID, we are no longer accepting returns to protect the safety of our fulfillment workers and customers.
    1. Turns out the best men's undershirt is actually The Baselayer. With its Proprietary seam design, lifetime odor resistance, and the category's best performance fabric, you'll find yourself reaching for it every day. 
       
    1. Fabric milled in Portugal, cut & sewn in Massachusetts
    2. Light-weight blend of eucalyptus origin lyocell, cotton, and elastane (62%, 30%, 8%)
    3. Fibers integrated with Polygiene ® for odor control that lasts the lifetime of the shirt
    4. Proprietary seam design that breaks the tension in your pits, provides free range of motion, and keeps you tucked in
    5. Less Medium (between S and M) and More Medium (between M and L) for the guys who always fall between sizes
    1. Machine wash warm
    2. Tumble dry, low heat

Built to perform

The fabric makes all the difference

See it in action