Not fat, but these are the best I've ever found. Super soft, bright white, long enough for good tuck. I have like 30 of these and just toss them when I spill coffee on it.

https://smile.amazon.com/RBX-Active-2-Pack-V-Neck-Undershirts/dp/B06XXWXSW5/ref=pd\_rhf\_ee\_s\_rp\_c\_sccl\_1\_7/133-7266996-1248248?pd\_rd\_w=IZs2g&pf\_rd\_p=eb305fa7-34bf-42db-ae8a-a5c88b5ed17e&pf\_rd\_r=TW6ESPBVKCDSCYB957Z0&pd\_rd\_r=ed6cabab-2674-4853-8918-678400b02915&pd\_rd\_wg=Bx3r3&pd\_rd\_i=B06XXWXSW5&psc=1