Superior Snow series deluxe winter mitt. They were designed with cold Canadian arctic winters in mind, and the result is a multi-layered, high-tech glove in a beautiful, deluxe, black calfskin leather package. The outer glove has a sidewall construction, which allows ample room for the removable liner and is elasticized at the wrist for a snug fit. All seams are fully welted for durability, and the extra-wide, double-layer nylon gauntlet cuff is 6.5-inches, while the overall mitt length is 17-inches. They fit easily over snowmobile suits and parkas, with straps for tightening and adjusting. A removable BOA pile wiper/cheek-warmer completes the exterior. The big story, however, is in the removable liner. Simply, it is the best we have ever designed, consisting of four separate layers of material that provide incomparable warmth. The two layers in the middle are cut from a Thinsulate fabric that is 400 grams of Thinsulate per square meter. These are then sandwiched by a foam-to-fleece laminate, while the whole liner is easily removed using velcro, allowing for easy drying. We truly believe it is the world's warmest glove.