Colorful and safe for hours of shredding fun. Only SF&B® uses Safe Shred™ Cotton Rope, which shreds into fine short cotton threads. Others use yarn rope that unravels into long thick sections that can entangle a bird. Birdie Bow Tie™ is woven by hand into a “Bow Tie” style bundle and anchored together with a stainless ring, and hung by a bird safe stainless steel quick link. The Large Bow Tie is approximently 11 inches long, while the Little Bow Tie is 8 inches.