Atomic's W Backland Primaloft Midlayer looks cool, clean and simple on the surface – but under the surface it’s a technical piece of touring skiwear. One of the keys is body-mapping – in exposed areas like arms, chest and collar we’ve placed Atomic Ripshield Lite with PrimaLoft® Silver Insulation to keep you warm and dry. Then we’ve put breathable, moisture-wicking Atomic Thermagrid fabric in key heat zones like under your backpack to offer the stretch and breathability you need for touring. Thermagrid is also anti-bacterial Polygiene® treated, so it stays fresher for longer and needs less washing.