These are amazing.  Purchased to wear while tending to horses and the muck mess they can make.  Before this I've only had the $10 rubbers from big-box stores, and nothing against them, they server their purpose well.  However, if you're going to spend anytime significant time in boots, then it is well worth the money invested.  So far have waded in muck and water half way up my calf at 20 degrees and been completely unaffected.  The item shipped extremely quick and fit like a glove, except for your feet.