To use this wine glass set, simply pour your favorite wine into the stemless glass. The cork stopper with the cute felt dog on top can be used to keep your wine fresh when you're not finished. When it comes to cleaning, wash the glass with warm soapy water and dry it with a soft cloth. For the cork stopper, avoid soaking it in water for too long to prevent damage to the felt dog. Keep the set in a safe place away from sharp objects to avoid scratches or breakage.