How to install---Easy to put on by simply adding spikes from your toes. Size: 7.9 - 10.6 inches (20 - 27 cm) (Depending on the shape of your shoes) Quantity: 1 pair (2 pieces) Number of spikes: 5 pieces; Material: Rubber, metal, Color: Black; Caution: Do not use for anything other than snowy roads or frozen roads; Please be aware that there is no cracks or damage before wearing this product. Polished spikes Please do not use if it has been reduced or dropped. ● The spike is sharp. Please be careful not to get injured when putting it on or taking it off. ● Please do not use the spike for anything other than the intended purpose. ● The bottom of the spike may not slip even if it is attached to the anti-slip at all. Please be careful when using; For new snow; Effect will be diluted in the event of a new snow; Please walk the spike pins into the roadside vertically as possible. Do not use for anything other than the intended purpose. *This product is a product that will only slide around. Please be aware that there is no guarantee of slippage. Even if the product is installed, please be careful when walking on bad roads.