If you have a Hooverboard you absolutely need this seat attachment!! It is so much fun, and turns it into a go kart. So, if you or your kid have trouble with balance on a hooverboard, this is such a huge help, and a must have! Instead of putting it in the closet, or storage, with this you will be able to get use out of it. This one is made for kids, and adults, it holds up to 242 pounds. It's compatible with most 6.5/8/10 inch hooverboards. Ours is 6.5 and this fits perfectly! You can adjust it to fit up to the 10 inch. The frame also extends, making it a comfortable fit for kids and adults. When attaching this onto the hooverboard, you adjust the brackets, and fasten the strap. That keeps everything firmly connected. I want to also mention, it only took about 10-15 minutes to put this together. The instructions were clear, and easy to understand. Attaching the hooverboard was very easy and only took not even a minute to do. Next, this was a huge hit for both me, and my boys. We struggle with balance, and now we're able to get a lot more use with our hooverboard. The handle bars are very easy to use. The handles have a foam padding making them a lot more comfortable as well. You can speed up, slow down, make turns, and even drive in reverse!!! Plus you can do some drifting, as the wheels rotate 360 degrees. Even if you don't struggle with balance, this is still a must have!! You can do so much with this one! The quality is exceptional, very heavy duty!! The frame is made of metal, and will not break easily at all. We live on a very rough, bumpy road and this has held up incredible!!! The seat is very comfortable to sit on, and is made extremely well too! It is thickened twice to prevent it from cracking and breaking easily. Overall, I am so happy to have found this. It is honestly such a blast, and I can't recommend it enough!!