Castelli's Fast Feet project: aerodynamic foot coverings for every condition.
The TT shoecover is designed for maximum aerodynamics in time trialing, within the limits of the UCI rules.
We developed it through CFD analysis followed by extensive fabric and on-bike wind tunnel testing. The smooth silicone-coated foot portion smooths out the shape of the foot, while the grooved leg portion helps detach the air as it flows around the leg. The shoecover is cut high, reaching to the calf.
There's no reason not to wear it on the road, but its gains are maximized at TT speeds.
Castelli's Fast Feet project – for time trials
Developed with Team Sky for the fastest foot covering for time trialing
Silicone-coated stretch fabric over the shoe smooths out airflow
Engineered grooved Lycra® in the ankle portion helps detach airflow
Flat polyurethane tape at the top to keep shoecover in place
READY TO COMBAT THE ELEMENTS The Rain or Shine concept within the Castelli collection is a designation for products that are designed to excel in dry weather yet provide significant water protection when you get caught in the rain.
This Rain or Shine shoecover is made with a stretch water resistant and windproof breathable fabric with a fleece liner, cut high to the base of the calf muscle for warmth in dry weather.
For rainy conditions, we've moved critical seams toward the outside, where they're less exposed. The zipper is also moved to the side, and we've included a molded reflective heel cup for visibility.
Rain or Shine product made to excel in both dry and wet conditions
Contoured seams offer optimal fit around ankle
Internal gripper around cuff edge to seal out water
Water-resistant inner splash zone with engineered seams to limit exposure to water
ONE GOAL: KEEP YOUR FEET WARM |We set out to create our warmest bootie ever, which meant rethinking how booties are made. For the windproofing we went with GORE-TEX INFINIUM™ WINDSTOPPER® fleece-backed fabric, which also lets more moisture escape than any other windproof fabric. Then we added a second fleece layer with Polartec® Power Stretch® Pro™, which is unrivaled in overall loft. The two layers are thick enough that we had to do a wheel well single-layer construction by the ball of the foot to prevent the fabric from rubbing on the crank. We made the bootie high for extra warmth and gave reasonable splash protection. We recommend our Venti Soft Sock for maximum warmth.
Castelli's warmest shoecover for extreme conditions
GORE-TEX INFINIUM™ WINDSTOPPER® fabric for windproof water protection with maximum breathability
Polartec® Power Stretch® Pro™ lining to keep you warm
DO-IT-ALL DILUVIO We've taken our best-selling Diluvio C and Diluvio Allroad booties and modified, improved and combined them into the all-new Diluvio UL. With improved fit and a better seal thanks to the neoprene enclosure at the top, large reflective rear tabs for visibility, and the flexibility to accommodate any type of cycling shoe, there's little this bootie can't handle.
WHAT IT IS A hard-wearing all-around neoprene bootie that features our premium 3 mm high stretch neoprene, sealed seams, skin-out top edge to seal against the foot, and adjustable opening under the foot to work with any shoe.
3mm neoprene for water protection and warmth
Velcro closure under foot for perfect fit
Bottom opening accommodates road, gravel or MTB shoes