evo.com | Arc'teryx Synthetic > Pull on the Arc'teryx Delta 1/2 Zip for comfort and performance and layer on. This lightweight and breathable fleece is a staple in any outdoor person's wardrobe thanks to its easy fit and innovative hollow core fiber that protects everyone's favorite way to add mid-layer style. Flatlock Seam Construction Improves Next-To-Skin Comfort Octa Polyester Fleece / 40D Delta Face / Polygiene 100% Polyester / 122gsm Fitted A trimmer fit is patterned to stay close to the body through the chest, waist, hip, and thigh. Its low profile eliminates bulk, moves with the body, and fits comfortably over first layers or under outer layers. Phasic(TM) AR II Engineered Polyester Fabric This fabric is soft, offers stretch and thermal comfort, and is made with wicking fibers. Chin Guard for Added Comfort | Arc'teryx Delta 1/2 Zip Men's 2026 - Medium Black | Polyester