The Salomon X Pro boots have been the top selling model at evo for years, and combining a mid-stiff 110 flex model with Salmon's slick My Custom Heat 3D Pro liner is a stroke of genius. The liner features an integrated electric heating system with batteries and controls built into the liner cuff, so there are no pesky batteries or cables to deal with. The liner also directs heat all around the foot, rather than to one spot under the ball of your foot. For those with poor circulation or who ski in really cold climates, this boot just might be the stuff of your dreams.