The Castelli Prologo VI LS Jersey derives its name from the Italian for 'prologue', the opening salvo in a Grand Tour. Now in its sixth generation it features a large, bold logo and packs a lot of tech directly from Castelli's experience with pro racing. The fabric used in this jersey's construction is remarkably soft yet stretchy and features bioceramic nanoparticles added to the fused polymer. This reflects infrared light to both protect you from the hot sun and help you stay warm. The Castelli Prologo VI LS Jersey also borrows a lot of cues from pro racing: the same drop-tail construction that helps the jersey sit right around the waist while allowing generous pockets that sit lower on the back. The wraparound side panels ventilate the back without letting in too much air from the front, and the easy-sliding YKK® Vislon® zipper allows for quick adjustments on the move. Castelli Prologo VI LS Jersey Features Horizontal stretch for great fit, with limited vertical stretch to support pockets Covered YKK® Vislon® zipper Castelli shadow logo sublimation overprint on dyed base fabric Drop tail with 3 rear pockets and internal silicone waist elastic on back Castelli Prologo VI LS Jersey Specifications The New Punto fabric is light and breathable Reflective piping 12°-20°C / 54°-68°F Weight: 201g