Each curved frame features a natural colored resin construction designed to resemble a collection of seashells resting atop a bed of sand. The back features soft felt. Doing double duty, you can place a 3 inch by 2 inch place card in each window to seat guests during your event. Each window opening measures 2 1/2 inches wide by 1 3/4 inches tall. After your event include your favorite photo in with all your thank you cards when mailing to guests. They are sure to love your inventive idea. Place cards included.