Fits our Irulu Walknbook Windows Tablet/Laptop with keyboard attached. Maybe 1/4 inch of room to spare. Most of our 10 inch tablets fit loosely in it, unless the keyboard/case is attached. Great protection. My only real complaint is that it doesn't have a handle like the cases we had in the military. The carry strap is nice and solid, but no substitute for a handle. It does bulge a tiny bit, maybe 1mm, on the sides when closed. So, I doubt it's actually water tight. For keeping our kid's tablets safe, to and from school, it works. Far better than any soft case, which have proven to be useless when crushed in a book bag or dropped, resulting in cracked screens.