An active use layer for vital core warmth, enhanced breathability, and stretch mobility, the Arc'teryx Atom LT Hoodie features hybrid construction with Coreloft insulation and Polartec Power Stretch side panels. . Hybrid construction: Coreloft synthetic insulation in torsoarmshood Polartec Power Stretch with Hardface technology at side panels. 60 g Coreloft synthetic insulation is lightweight and breathable with excellent loft retention insulates when wet and dries quickly. Polartec Power Stretch side panels with Hardface technology for 4 way stretch, enhanced breathability, wind, water, and abrasion resistance. Wind and water resistant nylon face fabric is soft, lightweight and breathable DWR durable water repellent finish helps repel water from fabric surface. Lightweight, warm, breathable, compressible, and packable stores in pocket or inside the hood. Insulated, helmet compatible ScubaHood hugs the head without the use of drawcords. Full front zipper with wind flap. Internal chest pocket two hand pockets. Articulated elbows and underarm gussets for unrestricted movement. Stretch knit cuffs. Drop back hem for greater coverage laminated hem adjustable hem drawcord. Trim fit for use as an outer layer in cool, dry conditions or as a midlayer in cold, wet conditions. Hip length.