iPhone Air ケース - ウォレット取り外し可能フォリオフリップフォンケース - Casebus レトロマグネットウォレットケース、Magsafe対応、取り外し可能2in1フォリオフリップカバー、カードスロット付き - CASSIDY - Casebus

The card slots are snug enough that my transit pass doesn't slide out, but the whole wallet part pops off in one clean motion when I don't need it. MagSafe still clicks solidly through the case, which surprised me. I've been using it for two weeks and the leather feel is breaking in nicely.

The magnetic detach is the star here—I can pop the wallet off when I’m at my desk and snap it back on for errands, and the card slots hold three cards snugly without bulging. Magsafe still clicks on clean through the case, which I didn’t expect with a folio.

I was skeptical about a flip case feeling bulky, but the detachable 2-in-1 design means I can ditch the folio cover when I'm just at my desk. The card slots hold two cards snugly without making the back bulge, and the magnet clicks into place with a satisfying snap every time.