Here you go:Rain boot VS 915 shoe. Both in size 8. The rain last tapers more towards the toes which results in a very snug fit for me. Size 8.5 in rain is too big for me causing heel slip. 915 in 8 is close to a perfect fit for me.You can also see that the shoe trees (both size 8) expand more in the 915 shoes than in the rain boots. I can even fit a size 8.5 shoe tree in the 915 lasted shoes.