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 torso/arms/hood; 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.