If the trays don't fit properly, the result could be patchy, and spilt peroxide could burn your mouth.
Times, Sunday Times
Is it just us, or do simply look don't fit properly?
The Sun
I find it so difficult to find clothes that not only fit properly but also flatter me too.
The Sun
The central touchscreen looks like it doesn't fit properly.
The Sun
Plasters, pads or strapping from the chemist may help ease the discomfort - and make sure your shoes fit properly too.
The Sun