I ordered the Malindis in the Oyster (white) color and took others' advice about sizing down.  I'm normally a size 9, so I ordered these in a size 8.  Yikes, too tight, and I spent an hour or so walking around the house to give them a chance.  They also made a "fwwaap" noise from air under my arch being pushed out.  Yeah, it sounded a heck of a lot like gas being passed.  Not cool.  No rhyme or reason to the noise either, I tried stepping a certain way to see if the noise would happen, but it was random.  I wouldn't say I have a super high arch or a low arch, either, I'm kind of middle of the road for arch height.

I returned the size 8 and got my usual size 9, and hoped the *fwwaap* noise in the size 8 was due to it being too tight.  My hope was short lived.  The size 9 fit wonderfully, but the unfortunate noises remained a problem.  I wanted the Malindi crocs for running to the grocery store and such, but not when that farting noise was going to happen.  I returned the size 9 as well.

Because these are a sling-back, I did not wear socks of any sort.  I think the noise problem was due to the plastic-like material of the Croc, as I don't have this problem in ANY of my other shoes or sandals.  Perhaps an additional insole would have solved the noise problem?  It might've but I returned them before I had the idea of an insole.  These were super cute for a comfy flat, and if you don't have the noise problem from air under your arches, it's a 5 star shoe.  For me, it was a 3 star shoe.  I wish these would've worked for me!