The Patagonia Retro-X Fleece Jacket - Infant is a high pile fleece for the chilliest days. Fall playdates at the playground, heading to daycare in winter, and exploring spring on the trails with mom and dad, this jacket provides the heat in cool to cold weather seasons. The soft fleece is 100% recycled polyester with a windproof lining to cut the breeze. A tapered collar prevents chafing and the zipper from hitting their tiny chin, while the nylon and spandex bindings at the collar, sleeves, and hem prevent drafts and dial in the fit.