Groomers - Though it is rare a boot is designed for one sole terrain type, boots that are categorized for groomers are generally designed for more beginner to intermediate skiers. Boots in this category are generally a soft to medium flex with the exception of race ski boots which are generally stiffer. 

All Mountain - Most boots are classified as All Mountain. This category covers the widest range of volume, flex and performance. These boots are made to ski various types of terrain and surfaces. 

Freestyle - Freestyle boots are generally made to be light and nimble when performing tricks. This style of boot usually has a medium flex. 

Big Mountain/Powder - Boots for big mountain/powder skiing are stiffer in nature and provide a higher performance fit. Stiffness creates the support you need when skiing at high speeds or through rough, variable terrain.

Backcountry - Backcountry boots are built for skiing as well as touring uphill. They are built with lighter constructions and offer closure systems that are meant to reduce weight compared to an alpine ski boot. These boots generally feature a walk mode which allows the boot to flex backwards, creating a more natural stride pattern when skinning uphill. A majority of backcountry boots also feature tech inserts in the toe and heel of the boot to accommodate a pin style binding.