ATHLEISURE TANK WHITE MUSCLE REPUBLIC CROPPED MUSCLE TANK (RECYCLED) White LNDR US Burnt Studios Fundamental Muscle Tank White LA Muscle Tank White James Perse Los Angeles Swift Cropped Training Tank White Muscle Nation Ignite Cropped Training Tank White Muscle Nation. This muscle tank features a snug neckline and a boxy fit. Crafted from 14's heavy, garment dyed 100% cotton jersey, it is knitted and sewn locally in downtown LA.