Castelli iracolo W Long Sleeve

In cool conditions, its mesh construction provides the warmth of wool, but won't get soaked during high-intensity exertion.

• Merino wool mesh material with nylon content for strength and elastane for elasticity
• Minimalist finish at collar, wrist and waist adds minimal bulk
• Reglan sleeves to avoid a seam at the shoulder under the bib
• Woven scorpion logo label at side collar

''What is this?" was the buzz on our social media channels when Tao Geoghegan Hart wore a prototype of this baselayer up and over the Stelvio on his way to winning the 2020 Giro d'Italia.
These conditions highlight where this garment excels: it provides a surprising amount of warmth by wicking moisture away from the body. But thanks to the mesh construction, it also never gets too hot. Great under a jersey for high-intensity use or as a first layer under a jacket. For us it was clear that we also need a women's version of this.