The 2016 Arc’teryx Delta is a versatile, lightweight microfleece that works as the perfect midlayer or as a standalone in cool weather. Being one of the most versatile fleece pullovers that Arc’teryx has ever designed, the Delta provides effective warmth with little weight. The air permeable Polartec Classic is designed to ensure comfort and freedom of movement so that you can stay warm without feeling restricted. This pullover half-zip is the perfect midlayer any time of year.