The name diamond originates from ancient Greek Adámas meaning "Unbreakable". Adámas 3.0 Bi-Fold Wallet has an ultra slim design handmade from 5oz premium Full-grain leather with strong saddle stitching and the interior is lined with luxury suede. I use saddle stitching technique with orange thread stitching one stitch at a time for unmatched strength, quality and consistency. No glue or zippers are used in this wallet. Simple, Elegant, Minimalist - Built to Last. Available in 4 colors. Slimmer than an iPhone 6!