I have tried shoe covers until I am blue in the toes. This Glacier is not as useful alone, as it is with adjustments. I purchased a pair of felt/wool inserts and trimmed them to fit in the bottom of the boot. It does take some work the first 3 or 4 times putting these boots on until learning the best way of getting your foot into the snug surroundings. I also found a couple of velcro strips to place onto the velco closures on the boot, so the velcro does not pull on any part of the shoe as I am removing the shoe. I would recommend these for riding in the winter with -temps down to 25 degrees-with the felt inserts. One may have to buy just a size larger to have room for whatever other thickness of wool socks or items inside the boot.