I order a pair of the contoured reef and uncontoured . the contoured sandal hurt like mad in the arch because they do not fit my foot right , while the non-contoured sandal feel great . frankly , the non-contoured do have shape to they -lrb- footb be not flat -rrb- so it be not like you have a non-supported sandal . I suggest you avoid the contoured and go for the regular reef !