In cool conditions the mesh construction gives the warmth of wool but won´t wet out on high-intensity rides.´´What is that?´´ Social media lit up when Tao Geoghegan Hart wore a prototype of this base layer up and over the Stelvio on his way to winning the 2020 Giro d´Italia.Those conditions highlight where this piece excels:it provides a surprising amount of warmth by pulling moisture away from the body to keep you warm, but the mesh construction means it´s never too hot.Great under a jersey for high-intensity riding or for layering under a jacket or thermal jersey.Features:Merino wool mesh mixed with nylon for strength and elastane for stretch.Minimalist finishing at collar and wrist for minimal bulk.Raglan sleeve to avoid seam on shoulder under bib strap.Woven scorpion logo label at side of collar. Compare prices from: Castelli in Men's Underwear