Want to get rid of fat anytime & anywhere? Want to keep cycling no matter what the weather is? The roller bike trainer from HOMCOM is a ideal solution these problems. It\'s easy to ride with no balance, protecting your waist and knees to the greatest extentan, and considering everyone\'s difference, the 8-level resistance is set perfectly. After you finish your training, you can fold it up and easily put it in your storage room, garage or anywhere else, as it takes up almost no space.Features: A perfect outdoor ride alternative to help hone your cycling skills With this roller bike trainer, weather, traffic, mood will not be problem any more Foladble design makes it easy for storage and carrying 8-level resistance meets different needs of individuals, get rid of fat quickly and easily Made of high quality steel and PP Fits for road or mountain bike with 26\"-29\" wheels.