Ninja accessory set includes backpack, 2 plastic swords, 2 plastic sais (knives) Backpack with shoulder straps designed to store toy weapons at the ready One size: designed for children ages 3+. costume accessory not intended for rough play or battle action Swords measure approximately 28-Inches, Knives measure approximately 9-Inches Family-owned, family-focused, and based in the U.S.A. since 1951, Rubie’s has classic and licensed costumes and accessories in sizes and styles for your entire