Skis are long, narrow pieces of equipment used for gliding over snow. They are typically made from materials like wood, fiberglass, or carbon fiber and come in various lengths and widths to suit different skiing styles. Skis are attached to ski boots with bindings, allowing the skier to control their movement on the slopes. There are different types of skis designed for specific activities, such as alpine skiing, cross-country skiing, and freestyle skiing. Each type has unique features that enhance performance in various snow conditions and terrains. Proper ski selection is essential for safety and enjoyment on the mountain.