The Schwalbe One 365 Performance Tire runs an Addix 4-Season compound engineered with a low vitrification temperature, so it stays pliable and grippy in cold weather instead of hardening up the way a standard summer compound does. That cold-weather focus doesn't cost anything the rest of the year either, since the same compound holds its rolling resistance at warmer temperatures too. A reinforced carcass with three continuous layers under the tread backs up that year-round mission with the puncture protection a daily training or commuting tire actually needs. What Our Gearhead(R) Experts Are Saying:"I rode through a genuinely cold morning that usually has me white-knuckling every corner on a standard tire, and this one held its line without that nervous, skating feeling. That's the compound doing exactly what a 4-season tire is supposed to do."