Prevue Pet Products BPV62091 2-Pack Tropical Teaser Coco Bundles Bird Toy Tropical Teasers coco bundles are replacement coconut fibers Used for refilling toys namely tropical teasers as well as for nest building Also include other materials such as cotton rope and nontoxic plastic beads to provide your birds with great beak exercise Easily connects to cage They can be safely used by birds for preening, plucking, foraging and nesting