Kilt flashes are decorative garters worn just below the knee with traditional Scottish kilts. They consist of two pieces of fabric attached to elastic garters, designed to hold up kilt socks (hose) and add a splash of color to the outfit. Historically, flashes were strips of tartan ribbon tied around the socks to prevent them from slipping down. Today, they are available in various colors and patterns, often matching or complementing the kilt's tartan. To wear them, position the flashes around the top of the kilt socks, fold the sock's top over the garter, and adjust for comfort and appearance.