A 17.3 inch laptop fits perfectly if centered. HOWEVER, if your laptop doesn't have rubber or some type of grip, the laptop WILL SLIDE. It does have enough room for a mouse if you mind pushing the laptop off to the side for a 17.3 inch laptop. HOWEVER, my mouse did not work well on the tray. The cursor jumped all over the screen - I needed a mouse pad. There is not enough space if you plan on using a mouse to play games, especially FPS games with a 17.3 inch laptop on this tray. The velcro that keeps the try and padding together is NOT a problem. HOWEVER, my friend complained that the padding felt uncomfortable. It's a fine padded mesh padding - She said it made her legs itch. I don't have that problem. Maybe my hairy legs counter that problem - I don't know but it's worth mentioning.


Pros: Very durable
Cons: No traction for laptops without padding