Designed to keep you dry in mild to warm conditions, the Prosecco Tech Women's Short Sleeve Base Layer has body mapping construction to provide the best wicking and insulation, right where you need it.The main body is made from a rib knit fabric with Prosecco hydrophilic treatment. The ribbing helps to trap air against your skin, for optimum temperature regulation, while the hydrophilic treatment helps to whip water away, keeping you dry even when the efforts intensify.To promote uniform insulation across your upper body, the Prosecco Tech uses PrimaLoft® panels at the waist and back. This thinner material will ensure that you won't overheat where your bib shorts and jersey overlap, while a crew neck will fit neatly under short-collared jerseys.Features:100% polyester proprietary stretch rib knit fabric for main bodyProsecco hydrophilic treatment for maximum wickingPrimaLoft® panels at waist and back, where bib shorts cover upper body, for even insulationCrew neck closure to fit under short-collared jerseysWeighs 87g (S)Castelli comfort rating of 10-19°C