cardboard walls, kraft paper surfaces, synthetic cotton insert STURDY CONSTRUCTION - Made from durable cardboard for a solid structure, wrapped in colorful kraft paper to suit any occasion or business theme. 25 Boxes per Unit OUTER DIMENSIONS: 5.4" x 3.9" x 1.0" / INNER DIMENSIONS: 5.2" x 3.7" x 0.8" - Large enough to comfortably fit a U.S. passport. MEDIUM SIZE - Ideal for a wide range of Jewelry: Necklaces, Pendants, Charm Bracelets or Dangle Earrings; as well as Collectibles other small accessories. AFFORDABLE RELIABLE - A cost-effective, yet dependable choice for storing, displaying, gifting or shipping jewelry and other small items. ENHANCED PROTECTION - Stronger walls ensure durability for shipping, while fuller cotton fill cushions items against scratches and impact.