MIER athletic base layer is made of polyester-blend spandex fabric. It delivers an amazing hand feel soft, lightweight and breathable. The 4-way stretch fabric allows you to enjoy outdoor activities without feeling restricted.

MIER thermal shirts feature unique engineered ventilation that wicks away sweat as you work out, preventing you from feeling cold due to build-up of sweat on your skin.

Unlike the standard low-cut round neck design, the mock neck design protects your neck from the cold and helps maintain your body temperature. Raglan sleeves and flat seams offer a greater range of motion.

Baselayers offers a snug thermal fit with a lightweight material that keeps you at the perfect temperature no matter where you work out. This long-sleeve performance tee is ideal for boxing, spin class, cardio sessions, gym, training, walking, jogging, workouts, everyday wear and more.