What Our Gearhead(R) Experts Are Saying:"I layered the Arrivee Montmartre Baselayer under the matching jersey for a warm-weather training block and it managed moisture better than I expected something this lightweight to handle. The extended back cut held its position through the entire ride, and the artwork adds a layer of personality that makes the full kit feel genuinely cohesive."The layer closest to the skin sets the tone for everything that follows, and the Santini TDF Arrivee Montmartre Baselayer is built to establish a foundation that performs as expressively as the kit it supports. Designed as part of the 2026 Tour de France Arrivee collection, it carries the visual identity of Montmartre - the Le Chat Noir black cat, the Moulin Rouge windmill, the loose painterly brushwork of a neighborhood that defined bohemian Paris - into the innermost layer of the build. Santini constructed the Arrivee Montmartre Baselayer from a lightweight mesh fabric engineered for rapid moisture transfer and consistent breathability across hard efforts. When output climbs and sweat accumulates, the open mesh structure pulls moisture away from the skin and accelerates evaporation, keeping the interface between skin and jersey dry and comfortable. The sleeveless cut eliminates bulk beneath a fitted jersey, and the extended back panel is shaped for the riding position, maintaining coverage through climbs and sprints without pulling free or bunching against the bib short waistband. For riders completing the Montmartre kit, this is the detail that closes the collection with intention.