The white shade in this shirt is bright without being too flashy or loud.
Boxing is My Therapy Funny Boxing Quote Gym Fighter Gloves Gift Unisex T-Shirt
The round neck here is reinforced with a double-stitch for longevity.
Mighty Micks Boxing Gym Rocky Philly Balboa Black Basic Tank Top
A nice touch on this graphic tee is the curved hem that adds a modern twist.
MICKS GYM BOXING PHILLY 76 ROCKY T SHIRT
An unbranded shirt like this one is perfect when you want to keep it low-key.
CLUBBER LANG Boxing Gym T-SHIRT – Rocky Balboa 80’s Movie
A nice touch is the unisex adult fit, which works for tall or short folks.