Using these Keen Revel IV High Polar boots is easy. Just lace them up tightly through the metal eyelets to ensure a snug fit. They're perfect for winter activities like walking in the snow or hiking on icy paths. When it comes to care, keep them dry. If they get wet, let them air - dry at room temperature. Avoid using direct heat sources as it can damage the materials. Clean the leather upper with a soft brush and a mild cleaner. Check the laces regularly and replace them if they show signs of wear. With proper care, these boots will serve you well for many winters.