To find your Knightsbridge Sleep Solutions chin strap size, all you need to do is measure around your head circumference just above your eyebrows.

Here's a quick guide:

1. Use a flexible measuring tape.

2. Wrap the tape around your head, just above your eyebrows.

3. Make sure the tape or string is snug, but not too tight.

4. Note the measurement in inches or centimeters.

5. Refer to our sizing chart to find your corresponding size.

If you're between sizes, we recommend going with the smaller size.

The bands of the Knightsbridge Sleep Solutions chin strap  lift *vertically* from under the jaw to work with the natural rotation of the jaw.  (In contrast, traditional chin straps wrap around the tip of the chin and force the jaw backwards into the jaw joint, which is uncomfortable and long term use can cause joint damage.)  And just as importantly, this chin strap has two bands ... an elastic band and a non-elastic band, the blue band is non-elastic what this does is it keeps your jaw from lowering you put this on snugly  and then the elastic band (the white one) and you just provide a little gentle upwards force the thing to notice is it goes from under your jaw and lifts vertically so it works with the natural rotation of your jaw which is partly why it's so comfortable.