Winter mittens are warm hand coverings designed to protect against cold weather. They are typically made from materials like wool, fleece, or synthetic fabrics that provide insulation. Unlike gloves, mittens have a single compartment for the fingers and a separate section for the thumb, which helps retain heat by allowing fingers to share warmth. These accessories are essential for outdoor activities in winter, such as skiing or snowball fights. Many winter mittens come with features like waterproofing or adjustable cuffs to keep snow and cold air out. Popular brands include North Face and Columbia, known for their durable and stylish designs.