Quick answer
For aero speed suits, choose a snug but not restrictive fit that allows full range of motion. The Le Col Pro Speedsuit and Pro Long Sleeve Skinsuit are engineered for a race-tight fit; size up if you prefer a looser feel or have a longer torso.
Why fit matters for aero performance
A speed suit only saves drag when it fits correctly. A loose panel flutters and creates turbulence; a suit that is too tight can restrict breathing or pedaling. Wind tunnel results assume the suit is worn as intended by the designers. If your size is borderline, consider your body shape and how you ride.
Trade-off: snug vs. comfortable
A race-tight fit is ideal for flat time trials or crit races where every second counts. For longer events like gran fondos or multi-day stage races, you might prefer a slightly looser fit for comfort, especially in the shoulders and chest. The Pro Long Sleeve Skinsuit uses the same aerodynamic fabric as the Pro Aero Jersey, which is designed to stretch without sagging.
Decision rules for speed suit fit
- Measure your chest and waist: Use a soft tape measure around the fullest part of your chest and around your natural waist. Compare to the Le Col size chart. The Pro Speedsuit and Pro Long Sleeve Skinsuit are sized similarly to other Le Col race-fit garments.
- Check shoulder mobility: Raise your arms above your head while wearing the suit. If the shoulder seams dig in or restrict movement, the suit is too small. If the fabric bunches at the shoulders, it is too large. If you have broad shoulders, consider sizing up in the Pro Long Sleeve Skinsuit for better range of motion.
- Evaluate torso length: A speed suit should sit snugly around the hips without riding up when you bend forward. If the suit pulls up at the crotch or feels short in the torso, go up a size. The Pro Speedsuit has a one-piece design that requires a longer torso for proper fit.
- Test the leg grippers: The leg openings should stay in place without digging in. If you see red marks or feel circulation cut off, the suit is too tight. If the grippers slide down during a ride, the suit is too loose. If you have muscular thighs, the Pro Long Sleeve Skinsuit may fit better due to its separate leg panel construction.
Product facts
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Pro Long Sleeve Skinsuit: The Pro Long Sleeve Skinsuit uses the same aerodynamic fabric as the Pro Aero Jersey, developed through wind tunnel testing. This fabric is engineered to maintain aerodynamic efficiency even when stretched, so a snug fit won't compromise drag reduction.
Pro Long Sleeve Skinsuit
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Pro Speedsuit: The Pro Speedsuit incorporates advanced fabric technologies refined through wind tunnel testing alongside world leading aerodynamicists. The suit is designed for a race-pedigree fit, meaning it should be worn tight to achieve the claimed aero gains.
Pro Speedsuit
Who should choose what
Best for
- Riders who prioritize aerodynamic efficiency and race performance over comfort
- Competitive cyclists doing time trials, crit races, or high-speed group rides
Not for
- Casual riders who prefer a relaxed, non-compressive fit for long days in the saddle
