MERRELL. J15752 J15752W. COLDPACK ICEPLUS MOC WATERPROOF MOCASSIN. BLACK. Winter doesn t stand a chance. With Vibram Arctic Grip for traction and a waterproof membrane for protection you ll be ready for winter and on your feet all winter long. Conductor fleece lining for added warmth. Merrell Air Cushion in the heel absorbs shock and adds stability.