perforated leather

Nice may be even nicer if they were vegetable tanned.  from web:

Portland’s Tanner Goods expands its lineup of wallets with a new perforated collection. The available silhouettes take the form of the Legacy Cardholder, Utility Bifold, Travel Wallet and Journeyman, all built with Horween Rich Chromexcel leather. Each piece is burnished, dyed, waxed, and stamped by hand, ensuring the development of a rich patina over time. Available in either Chestnut or basic black, these are lifetime accessories that become better with use. The Perforated Collection is available now through Tanner Goods’ online store.