Synthetic Rubber The all-new WSTX is the latest addition to Sailun?s Ice Blazer family line. A studdable winter tire that is designed for drivers that demand ultimate traction in all winter weather conditions. The modern WSTX design is engineered to give you maximum performance in slush, snow and icy conditions. Our specially formulated compound and polymer blends allow the tire to remain flexible for maximum performance and improves safety and handling. A proprietary blended Silica-Reinforced Formula provides excellent and reliable grip performance in low temperatures. The WSTX is designated with the 3PMSF Severe Service Emblem and is dedigned in Canada for extreme winter conditions.