I bought these boots for volunteer work at a horse farm.  I wanted boots that are comfortable, rugged, and won't make my feet sweat.  They passed the first test when they fit over my 16 inch linebacker calves.  They're lightweight, and I wore them for 8 hours straight and they were super comfortable every step of the way.  No blisters, no sweaty feet.  If fact, even with long winter socks, my feet stayed dry, warm and comfortable.  They fit well under my bootcut jeans, and rinsed right off when I got home.  In fact, when I got home, I left them on and went up to work in our garden.  They're great in dirt, rain, snow, or just wearing outside in the cold.  They're well made and built to last.  I would recommend these to anyone and I would buy them again in a heartbeat.