The Atom LT Jacket is quite simply one of the best lightweight & versatile insulated jackets that are available today. This fantastic jacket can replace several layers of bulky fleece with one superlight & cosy layer. Filled with a highly efficient synthetic Coreloft insulation it provides enough warmth for active cold weather activities or can be used all year round when the temperature drops. The face fabric is called Luminara & it is a soft touch yet very tough high density nylon fibre that is wind & water resistant & highly breathable. Powerstretch side panels provide fantastic freedom of movement & give an anatomical efficient fit. Insulated with 60g Coreloft on the body & sleeves, an incredibly efficient synthetic insulation that performs even when wet & will dry out exceptionally quickly. We have found through practical experience that this jacket is highly water resistant, negating the need for a shell until it really is pouring down. Featuring the usual Arcteryx gorgeousness & finishing touches including the jersey knit stretch cuffs which are just so comfortable & unobtrusive. Wind & water resistant hard wearing outer shell Breathable 60 gm 2 Coreloft insulation Polartec Powerstretch with Hardface technology side panels Articulated elbows Gusseted underarms Two zipped handwarmer pockets One internal chest pocket Jersey knit stretch cuffs Drop back hem Adjustable hem drawcord