Arc'teryx Delta LT Zip Neck - Men's One of the most versatile fleece pullovers Arc'teryx has ever designed, the Delta LT provides effective warmth with little weight. Quick drying, air permeable PolartecA(R) Classic 100 micro velour small grid and articulated construction focused on ergonomic freedom and performance comfort make the Delta LT extremely versatile. The Delta LT layers easily under a hardshell, but as a standalone adds light insulation for higher output in cool conditions. A low profile, high collar seals in warmth. Features: DELTA - Air permeable fleece mid layer. Thermally efficient, comfortable next to skin. LIGHTWEIGHT - High performance, minimalist design that is durable for its weight. ARC'TERYX ESSENTIALS - Versatile high performance designs for diverse activities and conditions. POLARTECA(R) - Synthetic fleece textiles with stretch, warmth and air permeable properties. Offers durability