we make it easy for you to save time, frustration and create a wow first impression during your first web meeting. contains soy, wheat, mustard seed, sesame seed. there is only one negative thing i can mention, which is to make sure not to leave them on edges of tables or counters because they move around if you are listening to something with a lot of bass. since i rarely hear the thunder but, do see bucks i think of it more as the full buck moon. 