I needed a tall boot for the rain and snow this year. I really liked the funky rain boots everyone's wearing lately, but all the reviews said that they do not keep your feet warm. Then, I found Nomads which make this fleece liner to go with their boots. It instantly changes a pair of funky rain boots into super warm winter boots. Now, I have two boots for the price of one and get a lot of wear out of my Nomads. I definitely recommend these liners. I bought the black. Just keep in mind that they will make your boot fit more snugly. I wear a women's shoe size 10 1/2. Nomad recommends sizing down to a 10. I sized up to an 11 to accommodate the boot warmer. When I don't wear the warmer, I wear a medium to thick sock with an insole (the boots have no arch support, so adding an insole is a good idea anyway). This is definitely a great accessory for your Nomad rain boots.