I use the g form extreme sleeve 2. I went through a half dozen or so other kinds of sleeves and this is by far the best. I found a cheap seller on Amazon for about $30. I used to really like hard candy zipper case until they completely fubared the bumpers making it less useful for quick removal. Plus those guys have ZERO customer service. Flat out never replied to calls or emails.
It's a tad thicker than I like but that's because it has some air gap if that makes sense, it kind of deflates a little as you Hold it. But everywhere I go, I get compliments on its looks.