The Shock Doctor Bio-Core Hockey Shirt is a great choice for an undershirt.  The shirt is constructed with drop tail hem, chafe-free flat lock seams, supportive four-way stretch anti-microbial fabric that wicks moisture away from the skin.

The Sleeve Lock™ design integrates an elbow pad retention wrap within the sleeve which eliminates the common problem of pad movement.  The Bio-Shape of the shirt matches the curve and shape of an athlete's natural stance, providing superior comfort and performance. The four-way stretch mesh in the spine and under-arm zones increase comfort and heat release, and make for an unrestricted range of motion.