Performance Shirts

A baseball undershirt is a base layer worn under your baseball jersey for moisture management and added comfort. Players wear them to stay dry during games, layer up in cooler weather, or add a personal touch to the team uniform.

Yes. Our Performance Shirts come in both short sleeve and long sleeve options. Long sleeve baseball shirts add coverage for cooler weather and bullpen sessions, while short sleeve styles work for warm-weather games, workouts, and everyday wear.

Our performance shirts come in Standard and youth sizes ranging from S through XXL.  The form-fitting cut runs true to size, though some players prefer sizing up for a looser fit when layering under a baseball jersey.

Yes. The lightweight, breathable fabric pulls sweat off the skin to keep you cool through hot summer games, while 4-way stretch construction delivers maximum mobility through every inning.

Yes. Wear it as a baseball jersey undershirt during games or on its own for workouts or casual wear. The clean reflective BOLT under the collar keeps the look sharp on and off the field.

BRUCE BOLT offers free shipping on orders over $100 and free returns or exchanges within 30 days. Every Performance Shirt is also backed by our 100-Day Guarantee, trusted by more than 30,000 five-star customers. Reach out to team@brucebolt.us for help with any order.