I had to return them as I found that when a walking, my foot slid up against the toe post, hurting the space between my toes.  I wear flip-flops all summer and am used to wearing them but this was painful for me.  Others I have that do not do this have a wedge/ridge for your toes to grip, preventing the foot from sliding forward.  I was sad to return them as i like the look, but not worth the pain.