Winter can be unpredictable and hazardous, but your tires should not. The new Hakkapeliitta R5 covers all northern winter conditions and performs predictably on bare, wet, icy and snowy roads. The new Double Block Grip design offers superior grip and handling, while the excellent ice performance is guaranteed by the unique Arctic Grip Crystals. The microscopic crystals work like built-in studs. As the tire wears down, the crystals emerge and activate a well-needed grip reserve.