TCB was Elvis' favorite logo and all of his inner circle friends had necklaces with "TCB" on them. This stands for Taking Care of Business. The lightning bolt was his signature symbol. For his lady friends he had necklaces made for them with TLC meaning Tender Love and Care. 

Clothier to the King has made socks, shoes, hats, t-shirts and polos all with this signature logo so everyone can channel their inner Elvis and feel included in his inner circle.