SPECIFICATION Size:2.8 x 2.8 x 0.8 Inches Color: Black Materials: ABS plastic, PE membrane Frame sizes: 7 x 7 x 2cm/2.8 x 2.8 x 0.8 inches Display screen sizes: 5.5 x 5.5cm/2.17 x 2.17 inches Mini size and lightweight Strong and durable Waterproof and dust proof Double-side 3D floating effect Push to open, easy to use WIDE APPLICATION Ideal for exhibiting medals, coins, stamps, medallions, jewelries, gemstones, specimen, poker chips, and other memorabilia. The valuable collectibles held tightly by membranes to get a dust proof protection. REUSABLE AND DURABLE Made of strong ABS plastic and transparent flexible PE membranes, lightweight, double sided 3D floating effect PE membrane will produce a crease after use. However, it can be removed by simply blowing it with a hairdryer, easy and durable for use.