As of this week, Baseballism Headquarters is moving into a larger warehouse space and will not process orders until July 18th. To accomodate for delayed shipping, we are offering free shipping on all orders through July 18th.
Engineered for Movement. Designed for the Ballplayer.
Built to outlast the grind. The Diamond Flex Lite Training Tee merges Baseballism’s signature style with serious performance. Whether you're hitting the cage, pushing reps, or recovering on off days, this tee is your go-to layer—combining pro-level fabric tech with an athletic streetwear fit.
Diamond Flex Lite Fabric
Proprietary textured polyester blend engineered to prevent fabric stick during high sweat activity—stays light, dry, and mobile.
Four-Way Stretch
Full-range mobility across shoulders and torso. Built to move with you, not against you.
BSBLISM Mark
Subtle branding hit for the committed. Worn by those who respect the game.
Oversized Athletic Fit
Modern relaxed silhouette—ideal for layering or wearing standalone.
Moisture-Wicking Polyester Blend
Smooth, breathable performance with elite durability and rebound.
HOW TO MEASURE, ALL MEASUREMENTS IN INCHES
Chest: Measure across the fullest part of your chest, armpit to armpit
Length: Top of the shirt to the bottom
These garments are hanging up their cleats. Get these products now before they are gone FOR-EH-VER.
Earn points on every purchase, which can be redeemed for free items and e-gift cards