Overview The Atom is a core outdoor kit essential, delivering reliable, breathable warmth for chilly alpine starts and unexpected summit squalls. Built with lightweight Coreloft insulation that won't pack out (even after years of wear) and stretchy fleece side panels, it traps and dumps heat strategically. Slide it under a hardshell for a clutch layering system that'll keep you warm, even if it gets wet. Details Technical features Moisture-resistant outer face fabric Breathable Lightweight Wind resistant Collar configuration Tricot lined collar for next-to-skin comfort Cuff & Sleeves configuration Stretch-knit cuffs Design & Fit Fitted, with articulated patterning for mobility and comfort Garment Centre Back Length: Size S is 26"/66cm - Varies by size Recycled Coreloft insulation delivers breathable warmth that resists packing out Side hem vent for improved mobility and freedom of stride Fabric treatment DWR (Durable Water Repellent) finish repels moisture and is PFAS-free Hem configuration Dual hem cinches seal out drafts and adjust length Pocket configuration Internal chest pocket Two hand pockets with zippers Internal chest pocket with zip Sustainability Contrast - recycled content Insulation - bluesign approved material, recycled content Lining - dope dyed some colours, recycled content PFAS (Per- and polyfluoroalkyl substances) Compliant Zippers & Fly configuration No Slip Zip front zipper Custom zipper pulls are glove-friendly Materials & care: Contrast: Circular Knit Fleece, 215 gsm, FC0 DWR - 93% Polyester, 7% Elastane Body: 20dx20d nylon ripstop, FC0 DWR, 45gsm - 100% Nylon Synthetic Insulation: Coreloft 60 (60 g/m²) - 100% Polyester Lining: 20D recycled dope dyed nylon ripstop, FC0 DWR, 38gsm - 100% Nylon Origin of fabric: JAPAN Origin of dyeing: JAPAN May release plastic microfibres into the environment when washing Machine wash gentle low Tumble dry gentle low Do not bleach Wash dark colours separately Do not dry clean Do not iron Do not use fabric softener Double rinse Do not wringBundle & SaveBuild a bundle and save up to 10% off.Shop Bundle Builder