This shoe runs very small when you compare it to other Keens (and I own alot of them). This has a very nice finish to the leather on the uppers. The toe box is not as pronouced as other Keens and lots alot more conventional on the foot. The S3 platform is a rigid piece of "plastic" from heel to toe with openings throughout to make it semi-flexible. The bottom line the S3 platform is very rigid isolating the foot and reducing ankle twisting. Unfortunately for me the line ends at a size 15m. If your buying a smaller size I would recommend a size up --it runs small.