These flip flops are astonishingly comfortable.  The sole/bed is made from this squishy, yet sturdy, foam stuff.  The strap is made of a soft, flexible cloth that firmly holds the sandals to your feet but does not subject you to foot torture.  Some other reviewers have commented that walking in these flip flops feels like walking on air, and they're right.  I was further impressed that these flip flops are sold in my size (I have giant, tall-lady feet).  This brand and this shoe have 100% won me over.  And now I rejoice.