The original best-seller. The Chainsen Pro has a tried and true record of performance with the thickest elastomer and burliest gauge on both the chains and the spikes for maximum durability and performance. Available in 5 sizes from S-XXL. Simple, lightweight traction on ice and snow Fits almost any kind of shoe or boot Easy to use - on and off in seconds Durable construction for heavy use We probably don&';t have to tell you that the boots are not included.