Zip-Around Wallet

A zip runs down one long side, across the bottom and up the other side, and the fourth edge works as a hinge. Everything inside is enclosed, so coins, receipts, a ticket and a dozen cards stay put when the wallet turns over in the bottom of a bag. Bodies run about 7.5 to 8 inches long and 4 inches tall, because the interior has to take a banknote flat rather than folded.

Opening one lays it out like a book. That means it holds so much: two full inner faces of slots, a zipped coin section in the middle, a sleeve for notes and often a slot cut for a phone. Depth is what you pay, since a loaded one passes an inch thick and fills a coat pocket rather than sliding into it. Zip quality is not a detail here but the whole wallet, because the perimeter zip is opened several times a day and takes its worst stress at the two lower corners where the tape has to curve. Metal teeth on a wide tape survive that. A fine coil zip, the spiral nylon kind, splits at a corner, and there is no working around it because there is no other way in.

Set against a bifold, this trades one handed speed at a counter for the fact that nothing ever falls out. Trifolds beat it on pocket carry and hold far less. Travel wallets look similar and are cut longer, because a passport book measures 125 by 88 mm and bends inside a body sized to a banknote. And a wallet on a strap is usually this exact interior with a D ring added, so if the layout suits you but you want to leave the bag at home, that is the version to look at.

Bag carriers get the point of it immediately, and so does anyone whose currency mints coins worth real money. Receipts for expense claims, transit cards and a young child's things all end up in here instead of loose. Trouser pockets are the wrong home, since a squared inch thick block prints straight through cloth. Speed is the other cost, because two hands and a few seconds at a till feels much longer with a queue behind you.

Work the slider all the way around and back, watching the two bottom corners for a point where it hesitates or rides up onto the teeth. Fill it with your real cards first, since a bulging body pulls the teeth apart at exactly those corners and that is how the zip dies. Leave a slot or two empty rather than buying the size that only just closes. Turn the coin section out and brush it every few months, as coin grit cuts the lining and then the stitching behind it.