Using these Fox & Pine Stitches Notion Nooks is a breeze. Simply open the magnet - locked lid and place your stitch stoppers, tools, and trinkets inside. You can quickly check what's inside through the transparent flaps without having to open the case. When you're going for a crafting session, just slip the case into your project bag. To maintain them, clean the hard - plastic surface with a soft, damp cloth. Avoid using harsh chemicals as they may damage the plastic or the magnets. Keep them away from extreme heat or cold to ensure the magnets work properly and the plastic doesn't warp.