My riding really improved after i got these; i ride everywhere. I feel more stable on the board because i don't feel like my feet are wobbling in my boots so i ride faster and with more confidence. I have fairly small feet and got a 6. I maybe should have bought a 5.5, but one foot is a half size larger than the other. So I wear different socks. It took me awhile to figure out how tight i want the liner and the top and the bottom. I finally figured out i ride great if the bottom is as tight as possible and the liner and top snug but allowing some flex. Someone at a shop said these run small, but i disagree. He did tell me the boots are the most important piece of equipment. I have not bought the heat packs but i may add those.