Big Ol' Box of Bones20 Buck Wild Bison marrow bones at a HUGE discount! Introducing the Big Ol' Box of Bones! This box comes with 20 nutritious bison marrow bones. Each bone is approximately 3 inches in length and packed with butter soft bison marrow. Stock up on bison marrow bones by ordering this Big Ol' Box of Bones today. These bones come frozen and can be kept in the freezer for up to a year. Enjoy HUGE savings on this Big Ol' Box of Bones! *Weights in the