Review on Laptop and Writing Wood Lap Desk by Pezin & Hulin - Large Cushioned Lap Desk with Handle, Wrist Rest - Fits Up to 17 Inch - Portable Stand Tray for Notebook, MacBook, Tablet, Phone, Pen, and Cup by Jose Hughes

I like how big it is. It fits my surface pro 6, RK 60% mechanical keyboard and mouse with plenty of room. What I don't really like is the wrist pad so I use it in reverse lol. My mouse is quite thin so using the wrist pad was uncomfortable. It's just my piece and doesn't detract from the fact that the thing is otherwise really solid. The roller coaster is definitely as small/flat as others have mentioned. I have a decently thin water bottle and it's too wide for a cup holder. So if you're considering buying with the intention of using a cup holder, consider the options. Otherwise go ahead and try.