The versatile, warm, and durable Arc’teryx men’s THORIUM AR Jacket is an alpine specialist, wearing perfectly as a standalone or lofty mid-layer. Its core and sleeves are padded with plush yet resilient 750 fill European grey goose down, delivering incredible lightweight warmth and packability. Down Composite Mapping combines the down-insulation with panels of hydrophobic Coreloft synthetic fill through the collar, cuffs, and underarms, which are areas prone to moisture. Abrasion resistant and subtly textured Arato 30 face fabric treated with a DWR finish sheds the wind and light precip. This insulators' regular fit easily layers under your hardshell. The adjustable drop back hem tightens with a drawcord. Concealed hand pockets close with zippers, securing valuables like your phone or music device while you're outdoors.