Archies Thongs vary in their length

Archies were designed to have a reasonably ‘snug / tight’ fit. If Archies are too long in length, the arch will not sit correctly on the foot. It is important to note, it is not a concern if some of the back edge of the heel hangs over the edge of the thong (as per the below image).

Of course, if your heel is completely over the edge of the heel cup and squashing down on the rim of the thong. 

Ultimately, the most important thing is that the thong is comfortable and the orthotic sits in the correct position on the foot.

Please see the image below of acceptable overhang.

 Please see the image below of too much overhang.