I have owned the cold snap cover for several years and will NEVER go back to the factory cover. Easy on and off when your on the go no need to worry bout the cover coming off while it is on the atv/sled.
The SM one is same thing but if you own a nils/jiffy Coldsnap has them available and I have a buddy who was able to modify the cover to fit his Ion…The covers are well worth the money!