Review of the dapper D01 wallet by a product designer with over 20 years experience:

The website claims the D01 wallet can hold up to 12 cards, in reality the absolute maximum is 6-7 (even less if your cards have embossed numbers) any more than this and the moveable plate and your cards are no longer retained by the aluminium frame and are simply held by the outer band meaning the cards and the plate can float up and down and come out.

Tried to seek a refund due to the item not being as described / not fit for purpose but they will only pay for the cost of the item not the postage. Be extra careful if buying in the UK as outbound postage is excessive at $28 and return postage will cost you around £13 making you £36 worse off.

Overall a product that has a lot of potential but has been poorly executed.