A vintage baseball undershirt, rebuilt in heavyweight ribbed knit. The Boston Red Sox Iconic Tank by Fanatics is made from 370gsm double-face cotton, the kind of substantial two-layer knit that holds its shape, ages with every wear and earns its place in your wardrobe for years instead of seasons. A cropped silhouette with a three-button henley placket and ribbed armhole binding lifts from heritage baseball undershirts, anchored by a tall rib waistband that pulls into a soft blouson. The Boston Red Sox mark at the left chest comes in dense embroidery, a textured callback to classic clubhouse pieces.