Medio Short Sleeve Base Layer

Castelli Medio Short Sleeve Base Layer

Enhance your cool-weather rides with the Castelli Medio Short Sleeve Base Layer, the ideal mid-weight option for transitional conditions where layering is key. Designed for medium insulation and maximum moisture management, this essential base layer keeps you warm without overheating, while efficiently wicking sweat away to maintain a dry, comfortable ride. Made from soft, 100% polyester stretch fabric, it offers a close-to-body fit that layers smoothly under short or long-sleeve jerseys alike.

With its short-sleeved design and crew-neck collar, the Castelli Medio is perfect for pairing with arm warmers or wearing under windproof layers, offering flexibility as conditions change. The excellent moisture control prevents chills after climbs or intervals, while the moderate insulation keeps your core warmer on fresh mornings or breezy descents.