Cindala - For me, there was no break in time. The strap between the toe is really soft, so it doesn't irritate at all. Today, I was wearing a different sandal with a between the toe piece, by the time I got home, I was ready to throw them out and wear nothing but the Teva Niyati! I told my husband that those Teva's have spoiled me and that I may never buy another "cutsie" sandal again! Honestly, they are very comfortable!
If you happen to order online, and wear a half size, size up. They only come in full sizes. For me, an 8 is really like a 7 1/2.