New Moon Jacob Book Bracelet: Jacob Black is determined to protect Bella from any dangers that lurk in the night. And although Bella should probably fear Jacobs alter ego, she cantand wont. Jacobs strength and friendship become her life raft on the seas of despair. This Book Bracelet features a metal charm with a color-coordinated elastic cord that fits most books. Book Bracelet is 5" diameter (unstretched).