To use these Clarks Kepley Erin boots, simply unzip the inside zipper and slip your feet in. They're great for daily wear, whether you're going to work or out for a casual meet - up. When it comes to care, avoid wearing them in extreme weather conditions like heavy rain or snow to prevent damage to the leather. To clean, use a soft, damp cloth to wipe off dirt and debris. Let them air dry naturally. If the leather starts to look dry, you can apply a leather conditioner. Also, make sure to store them in a cool, dry place. And remember, since the measurements can vary by size, choose the size that fits you best according to the provided measurements.