8-stud shoe chains: 8 strong teeth provide firm grip on icy and sandy surfaces, outdoor gear for walking or hiking on slippery and rough terrain Durable material: the spikes and chains are made of high quality manganese steel, the rubber backing is made of imported rubber. Safe and Convenient: Elastomeric construction allows for easy attachment and detachment compared to your usual shoes. Imported rubber, highly elastic and durable (no tearing or snagging) distributes weight evenly for long-lasting stability and comfort With the sharp spikes, usable in the field, on ice and snow, uphill and downhill, frozen surfaces are no problem Versatile: Available in sizes M (35-45) suitable for men and women of all ages; suitable for a variety of sports shoes, hiking boots and boots