Saved my back
Width: True to Size
Length: True to Length
Comfort: Very comfortable
Improvements: This review is for the Sitsmart Core Traction, not for shoes, but I'm forced to answer as if it were shoes - width and length are not an issue for this product.
The Sitsmart Core Traction has alleviated the pain of sitting on a dining chair while working from home - it provides support and cushioning and is very comfortable. So comfortable my husband stole mine and we ordered another one!