Made to order, special custom fit, pure fine heavy silver circlet (4oz of .9999 purity). Pure silver has been found to absorb and block both electromagnetic pollution and interference. This piece is handmade in America, made to measure. Can be worn as a crown or necklace. Piece can also be hung over high sources of EMF pollution like wifi routers, smart meters, speakers and other home appliances. As the item is handmade custom for you, please allow time flexibility in proper sizing process.