Bests & Worsts Reviews from Amazon

I ordered the 600 version before reading the 400’s have better traction on the bottom outer sole. So I ordered the 400’s to compare. Ultimately I returned the 600’s and kept the 400’s. There’s not a huge difference between the two. Both are nice. But I attached pictures. The uppers are exactly the same. I did not find any difference in strap length or material. The bottoms are very different on bottom, and the 400’s definitely seem to have better traction. Other than that the design on the instep is a little different. 400’s have a dot texture, and 600’s a stripe texture. Not sure if over time one would feel better/different if you were walking with a wet foot or not.