For staying warm in the coldest of environments, while being able to do tasks that require finger movement. When you want to wear them as fingerless gloves, the mitten top flips back and buttons to the wrist. When you want extra warmth, flip the top up and around your fingers. This will cradle the fingers and supply extra warmth. Thickly lined, the interior is soft and cozy. Stretch cuffs ensures that snow and wind stays out.