Not every day calls for things to be laced up, tightened down and serious. Sometimes it√¢'s nice to be able to toss your boots on, or off easily, with comfort to spare. That√¢'s why we built the Mountain 600 Chelsea. We borrowed the ultra-cushioning Vibram SPE midsole from our award-winning Mountain 600 to provide daylong comfort. For the sole, we kept the same lightweight, but grippy, Vibram Fuga outsole that makes the Mountain 600 so capable. A full-grain leather, non-waterproof upper matched with a flexible Ariaprene collar makes the Mountain 600 Chelsea slip on or off easily ‚Äì perfect for kicking around town or working on a project close to home.