Providing wearers with ease and emancipation, flip-flops are hard not to love, said Brian Curin, president and co-founder of Flip Flop Shops.

CNN: Flip-flops present feet with a painful problem

Curin said oftentimes it's such sandals that alleviate problems, not cause them.

CNN: Flip-flops present feet with a painful problem

But Curin said researchers, who typically refer in their studies to cheap rubber flip-flops that can be purchased at discount stores, must realize not all flip-flops are created equally.

CNN: Flip-flops present feet with a painful problem