Who needs a multi-tool when you've got the Arc'teryx Men's Atom LT Hooded Insulated Jacket? Well, you don't--though, you might want to bring one along anyway (just in case). More specifically, the designers over at Arc'teryx made the Atom LT versatile enough to handle year-round mountain adventures ranging from climbing to skiing. The Atom LT is constructed with a durable, breathable, and lightweight Tyono exterior, while the DWR treatment fends off light rainfall--meaning you stay relatively dry no matter what Mother Nature throws your way. To bolster its adaptability, the Atom LT is equipped with gusseted underarms and Polartec Power Stretch side panels to ensure an unimpeded range of motion whether you're wearing it as a midlayer or an external shell. Perhaps most importantly, though, is the Atom LT's synthetic Coreloft insulation. This synthetic insulation not only retains warmth in wet weather, but also offers maximum thermal efficiency without compromising the compressibility of the fibers. A StormHood slides over helmets with ease, and the adjustable hem provides a personalized, snug fit should you desire it.