Features: Spikes are made of premium metal material, multiple spikes on the sole and heel, provides excellent toughness and durability for long time use. Straps are made of quality rubber, wearable and anti-aging, resistant to low temperature and corrosion. It helps increase the grip while climbing on snow mountain to protect you from slipping, keeps your safety. 2 kinds for you to choose, suitable for most size of shoes, easy to wear and take off. Great for climbing lovers, lightweight and portable for easy carrying and storage.