I only tried it on to test it out. There is no instruction manual. This is the ultra-lightweight, simple crampon "Spider." The Spider is designed to grip the arch of the foot. ○ Lightweight and compact, weighing only 155g per pair, making it easy to store. ○ Compatible with hiking shoes and trail running shoes. ○ The large plate area and the 10 pins provide grip over a wider area. The pin tips aren't very sharp, but they surprisingly work well due to the large surface area. The plastic plate material used is "Zytel," a polyamide nylon resin developed by DuPont. It has properties such as chemical resistance, moisture resistance, high-temperature resistance, low-temperature resistance, and impact resistance, and is used in various industrial products. It can be considered one of the best materials for preventing breakage in low temperatures. A storage bag is included with the product.