According to legend, dreamcatchers were used to ward off bad dreams, the theory being that only good dreams would be allowed to filter through the spider web, bad dreams would be caught in the net, disappearing with the light of day. If there is any truth to that belief then one cannot go far wrong with this 37" spider dreamcatcher, with black and white beads and real feathers. This must be one of the largest dreamcatchers on Ebay measuring 20" wide with a total length of 37" when all the tassels and feathers are hanging down.