Bar Mitt Extreme has a velcro removal cuff where your hands go in and out of the mitts for temperature changes and a zipper along the front edge of the mitts to allow for ventilation if it gets too warm. Used for colder climates or for people that get exceptionally cold hands. The standard extreme mitts come with 1 bar end plug on each mitt. If you have a mirror, there will be 1 hole in 1 mitt and the other will have a bar end plug. If you have bar ends, there will be 1 hole in each mitts and no bar end plugs. Neoprene has a closed cell construction that features closed air bubbles that serve as insulators. Waterproof and windproof. Reflective material on the seam of mitts and logo. Bar Mitts stay open and stiff allowing for easy access and removal of hands. Can be used with a thin liner or lighter glove allowing for increased dexterity. Those who suffer from Raynaud's or numb, cold hands due to the cold, wind, rain or snow can continue to ride in comfort.