I've tried about 4 of these pop up wallets over the last 2 weeks to find the right one for me and I think this is the one. Most of them were either too thick or too flexible, they just didn't feel right. In addition, there is the lower slider, which is uncomfortable for left-handers. The side button is really amazing, works both ways and is easier to press since you're using your thumb. Don't try to insert the card too thick, you can loosen the edges of the leather from the card holder. I'm not sure mine will peel any further, but a few drops of superglue should be more than enough if he decides to do so. I highly recommend this.
Credit Card Holder with Chain Cover
70 Review
Royce Leather Mens Business Green Men's Accessories in Wallets, Card Cases & Money Organizers
62 Review
Minimalist Slim Wallet Men Women Men's Accessories for Wallets, Card Cases & Money Organizers
51 Review
Crabby Wallet Minimalist Pocket Polyester Men's Accessories in Wallets, Card Cases & Money Organizers
59 Review