The Delta LT Jacket is a true essential. One of the most versatile fleece jackets Arc'teryx has ever designed, it layers easily under a hardshell and delivers effective warmth for little weight. Made from Polartec Classic 100 micro velour small grid, the Delta LT is highly air permeable, dries quickly and packs small. As a standalone, the jacket adds light insulation most suitable for higher output in cool conditions or to cut a summer evening temperature drop. Under a shell, it works as a lightweight midlayer.