Great Compability This Indoor Bike Trainer Stand fits any road or mountain bike with a 26-28" or 700c wheel, and with rear wheel axel between 4.92'-6.57" Adjustable Rubber Feet Thanks to 5 level adjustable anti-slip rubber feet, this bike trainer can keep balance on uneven floor Keep Your Bike Ready Front wheel block and quick-release lever were included Extreme Portability Super tiny size for daily use and easy storage Extended size: 21.5"x18.5"x15.7" Folded size: 21.5" x 7.9" x 25.2" Silky-smooth Spinning Our specialized noise-reduction wheel will make your workouts as quiet and can be. Better still, the reduced friction design prolongs the life of your bike tires for maximum riding time. The stationary bike stand's noise reduction resistance wheel works to reduce the hum generated by your spinning rear wheel, so you won't have to pound out the jams and whirr the house down just to get some tunes going while you ride- much to the relief of your girlfriend, dog, and disgruntled neighbors. Also, the smoother resistance wheel can prolong the lifespan of your bicycle. Easy to Assemble, Easy to Use Ready to head outside? Just hit the press-down lever clamp to easily release and remove your ride. Short on time? No Problem. The Sportneer Indoor Bike Trainer Stand can be assembled and disassembled in just a few short minutes. Just lock your bike in place, set your ideal resistance, and get pedaling!