The mat does not slip around. It looks ok. It is large enough for a chair including it's movement. However, it's not rigid enough to spread the weight of the chairs feet. It got indented with the chairs feet positions within 2 days of usage.

Curled up corner and moves around otherwise ok.

Just what I needed

Great

Do not worth £25! It is impossible to unfold it the chair doesnt run freely with it or without is the same thing do not waist your time and money. Plus you pay for delivery it comes late and there is no communication at all ( bad customer service)