Classic

• Classic-style boots match classic skis for the traditional Nordic track style of striding and gliding. Opt for classic boots if you tread mostly on groomed surfaces and trails. These boots are light with a soft feel that provide sufficient responsiveness. The classic style is more flexible and comfortable with plenty of stability. Opt for classic cross-country boots with a mid-ankle cuff for more support.
  
  

Skate

• Skating boots are made for cross-country skiers who prefer speed skiing. These boots are stiffer to provide maximum ankle support while also very lightweight for increasing speed. According to Backcountry.com, sizing for skating boots are similar to the way you would size for tennis shoes. Additionally, they are generally higher and reinforced around the ankle and heel for transferring speed power to the skis.
  
  

General Touring

• Touring boots are designed for skiers who like to explore the backcountry. These boots are characterized by their heavy-duty construction for withstanding ungroomed trails. Made with waterproof plastic shells, they are typically heavier in weight but very durable. Touring boots offer flexibility with just enough rigidity for turning and stopping along off-track snow paths. You may find other features like lace covers and accessory rings for attaching gaiters.
  
  

Metal-Edge Touring

• These boots are even more durable and stiffer compared to general touring boots. With a taller and burlier design, these pairs provide more ankle support for off-trail turning. Other features include a stiff sole, stiff lateral support and added insulation for more warmth. Boots for metal-edge touring have flexibility but are designed with a higher-cut boot top. You may find some pairs with thicker plastic shells for extra rigidity.