Review on PVC Transparent Rectangle Office Chair Mat For Hardwood Floor, 35" X 47", Anti-Slip Under Desk Mat For Rolling Chairs, Home And Office Floor Protector by Leroy Wolfe

This is recommended for hardwood floors. I have it on a very flat, commercial grade carpet and it still slips. I''m constantly readjusting it as it moves itself around. The lip to go under the knee hole is just a tiny bit too narrow to stay in place. I would think the opening under most desks is a standard width, so making the lip the proper size to slip under the sides of the desk and stay in place would so much better. As it is, It comes out and the whole mat proceeds to buckle on the other side. Not nearly as sturdy a mat as others I''ve had either. There are better options out there.