These are very warm boots.  And they are not slippery.  I have a back injury and wanted something to keep me stable on my feet in the winter months.  These worked fine walking across a large parking lot with many ice patches going to and from work, shoveling snow, and even cute enough to go shopping, although they did get warm.  I have the hardest time finding boots/shoes that are comfortable (foot problems from years of standing on my feet at work) and these were quite comfortable.  The only problem I had was the tag on the inside of boot rubbed side of leg, I just removed it and they're fine now.