The Sailun Ice Blazer WST1 is a studdable winter tire designed for drivers that demand maximum traction in severe weather conditions. Even without studs, this tire has a swept back groove design that will give you grip on packed snow and ice covered roads. Also, this tire has a rubber compound that will keep the rubber flexible for maximum performance in very cold temperatures. This improves the safety and handling on dry and cold roads. All these attributes contribute to the Sailun Ice Blazer WST1 exceeding the requirements for the Severe Service Snowflake Emblem.