Seamless, fitted construction. Lightweight performance insulation. Thumbhole cuffs. Full, fabric-capped zipper with oversized pull. Variable ribbed texture for enhanced ease. Ribbed hem for a stay-put fit. Moderate four-way stretch. Ventilation ports down each arm. Care: Wash before wearing. Machine wash, cold. Air dry. Fits true-to-size, very fitted. Fabric: 90% Nylon, 10% Spandex.