The RW-7 Long Sleeve Top is Sparco’s highest-spec FIA race underwear top. Part number 00780M. FIA 8856-2018 approved.
The fabric is treated with Sparco’s X-Cool silver process, which draws heat away from the skin and has an anti-bacterial effect. All logos are printed rather than woven or embossed, because woven badges add material that breaks the continuity of the knit and creates a slightly heavier, less uniform feel against the skin in a hot cockpit.
The construction has no side seams. The fabric wraps the torso as a single piece, with elasticity graduated across different areas so sections near the ribcage and shoulders give where they need to. The result is a close fit that stays in place in the seat without feeling constrictive.
Available in black or white. Three size bands: XS/S (32″ to 36″ chest), M/L (38″ to 46″), XL/XXL (48″ to 52″).
If you are looking for FIA underwear at a lower price, the RW-5 range is a step down in fabric quality. The RW-7 is the one to run if you race often or want the weight and comfort advantage to show across a full day at the circuit.








