The thick moss mat in the gold sluice captures more tiny gold flakes. It features a lightweight aluminum box structure, includes a storage bag, and convenient shoulder straps for ease of mobility and use. It's perfect for novice gold prospectors, adult gold panners, and experienced miners alike. | Vevor | | Folding Sluice Box Gold Panning Kit, 50 Inch 23pc Gold Prospecting Equipment Kit with Gold Pan, Classifier Screen | Silver | Best Buy