“I have purchased at least seven pairs of OLUKAI sandals for my husband and me. Have loved them all until this pair. The sole tread traps so much sand, and it is virtually impossible to remove it. I have tried several brushes and tried bending the sandal to open up the tread somewhat. They are fine for outdoor wear, but I am concerned that wearing them inside will cause scratches to my floors. The sole design should be revised.”