Mid Layers

Light, versatile synthetically insulated hoody works as a midlayer and standalone. Atom Series: Synthetic insulated midlayers. | LT: Lightweight. Steeped in the alpine, this versatile hoody has warmed climbers, hikers, backcountry skiers and downtown commuters. Worn as a midlayer or standalone, it performs across a range of conditions and output levels. Coreloft™ Compact insulation retains warmth even if wet and has loft retention that withstands years of packing and unpacking. The water resistant Tyono™ 20 face fabric is soft, breathable and durable, stretch side panels improve ventilation and freedom, and the insulated StormHood™ adds warmth.

Light, versatile synthetically insulated hoody works as a midlayer and standalone. Atom Series: Synthetic insulated midlayers. | LT: Lightweight. Alpine proven as a midlayer and standalone, this versatile hoody has warmed climbers and backcountry travelers for years. Built to handle a range of conditions and output levels, the latest-generation Atom LT’s Coreloft™ Compact insulation retains its warmth even if wet and has loft retention to withstand years of packing and unpacking. The water resistant Tyono™ 20 face fabric is breathable and durable, stretch side panels improve fit and freedom, and the insulated StormHood™ adds warmth.

Light, versatile synthetically insulated hoody works as a midlayer and standalone. Atom Series: Synthetic insulated midlayers. | LT: Lightweight. Steeped in the alpine, this versatile hoody has warmed climbers, hikers, backcountry skiers and downtown commuters. Worn as a midlayer or standalone, it performs across a range of conditions and output levels. Coreloft™ Compact insulation retains warmth even if wet and has loft retention that withstands years of packing and unpacking. The water resistant Tyono™ 20 face fabric is soft, breathable and durable, stretch side panels improve ventilation and freedom, and the insulated StormHood™ adds warmth.

Light, versatile synthetic insulated jacket works as a midlayer and standalone. Atom Series: Synthetic insulated midlayers. | LT: Lightweight. Light, packable and proven, the Atom LT – an Arc’teryx icon – is a performance warming layer for backcountry adventures, alpine ascents and downtown commutes. Refined for its next generation, we elevated its performance and extended its versatility. The Coreloft™ Compact 60 insulation retains heat when wet and withstands repeated packing and unpacking. The soft, durable Tyono™ 20 face fabric resists wind and weather, and stretch fleece side panels improve ventilation and freedom of movement.

Lightweight, versatile down hoody provides exceptional warmth for its weight. Down Series: Down insulated garments | LT: Lightweight. Streamlined in its design, and with an exceptional warmth-to-weight ratio, the Cerium LT hoody works as a mid layer or a standalone piece in cool, dry conditions. Premium 850 fill-power down is lofty and resilient, the Arato™ 10 nylon shell provides lightweight durability, and Down Composite Mapping™

Streamlined in its design, and with an exceptional warmth-to-weight ratio, the Cerium LT hoody works as a mid layer or a standalone piece in cool, dry conditions. Premium 850 fill-power down is lofty and resilient, the Arato™ 10 nylon shell provides lightweight durability, and Down Composite Mapping™ strategically places Coreloft™ synthetic insulation in moisture-prone areas. Articulated construction moves with the body, and the insulated StormHood™ provides coverage without compromising range of vision.

ATOM LT HOODY MEN'S Insulated, mid layer hoody with wind and moisture resistant outer shell; Ideal as a layering piece for cold weather activities. Atom Series: Synthetic insulated mid layers | LT: Lightweight. CUSTOMER TIPS Our Atom LT and SL products have non-locking zippers by design. One purpose of the non-locking zipper is that it is easier to operate with one hand. This design feature also helps to limit the possibility of damage to the zipper and lightweight face fabric directly adjacent to the zipper. ATOM LT HOODY This trim hybrid hoody is designed as an active-use insulation layer, providing vital core warmth with liberal mobility and breathability. Lightweight and compressible, the Atom LT Hoody features Coreloft™ insulation in the torso, arms and hood. The side panels and underarms feature smooth faced, air permeable fleece stretch for ventilation. A wind and moisture resistant outer shell extends stand-alone usability. ESSENTIAL PIECE Fact: Every person at Head Office owns at least one Atom LT; most of the women have two. The reason: Coreloft™ insulation inside a light taffeta shell. All the comfort of a sleeping bag, but it feels weightless. WINDSHELL The benefit of taffeta fabrics is their light, airy nature with an ability to turn aside wind. The Atom series have a taffeta outer lining that is treated with DWR (durable water resistant) finish to give them a long-lasting ability to shed moisture. In light precipitation, the Atom LT can be worn as an outer layer. NO SWEAT Mid layers that can function as outer layers have varied degrees of weather shedding capability; they also have varied degrees of moisture management. In addition to being made of breathable Coreloft™ insulation, the Atom LT has smooth faced, air permeable fleece stretch side panels to help regulate temperature during exertion. PACK LIGHT Highly compressible, Atom pieces pack down into a tiny parcel of stored warmth. Store the jacket inside its own pocket, or tuck it into a sleeve or inside the hood if you are not restricted by space. A quick shake restores the original loft, time and again.

ATOM LT HOODY WOMEN'S Lightweight, breathable, insulated hoody; Ideal as a standalone piece in fair weather, or as a layering piece in cold conditions. Atom Series: Synthetic insulated mid layers | LT: Lightweight. This trim hybrid hoody is designed as an active-use insulation layer, providing vital core warmth with liberal mobility and breathability. Lightweight and compressible, the Atom LT Hoody features Coreloft™ insulation in the torso, arms and hood. The side panels and underarms feature feature smooth faced, air permeable fleece stretch for ventilation. A wind and moisture resistant outer shell extends stand-alone usability. ESSENTIAL PIECE Fact: Every person at Head Office owns at least one Atom LT; most of the women have two. The reason: Coreloft™ insulation inside a light taffeta shell. All the comfort of a sleeping bag, but it feels weightless. WINDSHELL The benefit of taffeta fabrics is their light, airy nature with an ability to turn aside wind. The Atom series have a taffeta outer lining that is treated with DWR (durable water resistant) finish to give them a long-lasting ability to shed moisture. DWR protects against light precipitation. NO SWEAT Mid layers that can function as outer layers have varied degrees of weather shedding capability; they also have varied degrees of moisture management. In addition to being made of breathable Coreloft™ insulation, the Atom LT has smooth faced, air permeable fleece stretch side panels to help regulate temperature during exertion. PACK LIGHT Highly compressible, Atom pieces pack down into a tiny parcel of stored warmth. Store the jacket inside its own pocket, or tuck it into a sleeve or inside the hood if you are not restricted by space. A quick shake restores the original loft, time and again.