The Atom LT Vest is quite simply one of the best lightweight & versatile insulated gilets available; this year its been enhanced with a lighter, stretchy face fabric & enhanced collar design. This fantastic vest can replace layers of bulky fleece with one super light, unrestricted & warm layer. Filled with a highly efficient synthetic Coreloft insulation it provides enough warmth for active cold weather pursuits or can be used all year round when the temperature drops. The new face fabric is called Tinthan & is a 100% nylon 46g/m² 20D mechanical stretch nylon rip stop with an air permeable polyurethane coating & a durable DWR (Durable Water Repellant) finish. So the upgraded Atom LT Vest is softer, more compressible, tough & just as practical...genius! The PU coating & DWR finish make this brilliant piece highly weather resistant, keeping out all but the worst wind & rain. Polartec Hardface Powerstretch side panels provide fantastic freedom of movement & give an anatomical efficient fit. The Atom LT Vest now features a re-designed collar with a soft brushed lining & added height to improve insulation. This is a big improvement over the old Atom LT Vest as its collar was a bit minimal & too short. Insulated with 60g/m² Coreloft, an incredibly efficient synthetic insulation that performs even when wet & will dry out exceptionally quickly. Featuring the usual Arcteryx gorgeousness & finishing touches. Tinthan nylon wind & water resistant hard wearing outer shell Breathable 60 g/m² Coreloft insulation Polartec Powerstretch with Hardface technology side panels Soft brushed-lined re-designed collar Two zipped handwarmer pockets One internal chest pocket Drop back hem Adjustable hem drawcord