Deep Blue is a colour you notice in the hand and stop noticing in the pocket: a saturated navy dark enough to pass as black in low light, and blue enough to feel different every time you pull the wallet out. It gives the Copernic compact a seriousness that black sometimes cannot, since navy has more depth, and the Epsom grain lifts whatever light it finds.
Eight card positions and two flat pockets live inside, with one full bill pocket behind them; the whole thing measures 4.3 by 3.5 inches and is handmade in France. The point of the design is subtraction, no coin zip, no fold-over bulk, no hardware to catch on a lining, and it keeps the promise: this wallet is thinner than most cardholders I have owned, with more storage than any of them. If the bills in your currency run long, the pocket takes them folded once, which I mention because mine do.
In practice it survives what travel throws at a wallet: repeated in-and-out, foreign notes that are taller or stickier than expected, boarding passes jammed behind a card. Epsom keeps the corners squared through all of it, which matters when a wallet lives in a trouser pocket the way mine does on trips.
One thing to know: in dim rooms, Deep Blue reads near-black. If you want a wallet that announces its blue, this one whispers it instead, and only you get the joke. After a year of this, the grain still catches light across the flap like new.



































