When every watt of energy expenditure is crucial to performance, streamline your race-day efforts with the slim profile of the Castelli Men's Body Paint 3. 3 Speed Suit. Originally developed for pro riders competing on the World Tour, the Body Paint 3. 3 Speed Suit is one of the fastest commercial suits available for us mere mortals. Castelli claims it saves an impressive 28 watts, compared to a standard jersey ridden at 24 miles per hour. From the lab to the race course, extensive research and design brought the Body Paint 3. 3 Speed Suit to fruition. Castelli used computational fluid dynamics modeling in conjunction with wind tunnel testing for the most aerodynamic suit possible. For 2017, it's been re-tweaked for a few watts of energy savings, thanks to a slightly revised design along the legs and yoke. Power Stretch Lycra is placed along the body, supporting key muscle groups while retaining a slippery aerodynamic profile. Seamless shoulder straps employ GIRO3 elastic for flat-lying comfort without irritation. The grippers are knitted directly into the leg fabric without stitching irritation or binding issues. For optimal padding, Castelli places a Progetto X2 Air seat pad for body-adapting comfort, antimicrobial properties, and multi-density cushioning.