Starfleet 2401 Uniform -

or where to buy replica versions for real life.

: The shoulders feature a black, textured, or quilted material that provides a slightly more "armored" or tactical look compared to the flat fabrics of the TNG era. Starfleet 2401 uniform

What does the yellow 'operations' uniform mean on Star Trek? or where to buy replica versions for real life

: Worn by captains, first officers, and tactical leads. Starfleet 2401 uniform

: Worn by engineering, security, and communications personnel.

The 2401 design is a evolution of the "First Contact" era and the 2399 uniforms, focusing on a more professional and structured appearance: