I walk my 70# dog 3x/day, about 3 miles all told, and after 3 1/2 years my other rainboots began to leak ... at the least convenient time.  I had ordered a replacement pair from another provider, but the sides were so flimsy that I was afraid they'd tear easily.  These boots came quickly, are the right height, and sturdy.  I returned the others :)
PS:  in a shoe I normally wear a 9, but find that in all manufacturers rainboots an 8 fits perfectly.  I wear them with thick socks, sans shoes, and am able to tuck my jeans into the tops.