Arc'teryx Delta 1 2 Zip Men's evo Arc'teryx Men's Delta Half Zip Stone Green Arcteryx Mens Delta LT Zip Neck Basalt Delta Jacket Men's Arc'teryx Arc'teryx Delta Half Zip Pullover Men's Geartrade.com. A handy bit of kit you will find yourself constantly reaching for, the Arcteryx Delta Half Zip is a versatile and high performing base layer, made from stretchy fleece, utilising Polartecs Power Dry. Its supremely comfortable thanks to its neat, close to body fit thats designed to give optimum warmth at minimal weight, whilst its low profile design is easy to layer when required. 100% polyester Polartec Power Dry fleece Half zip fastening Stand collar Raglan sleeve Zipped chest pocket Ribbed cuffs and hem Snug fit, choose your usual size