The Dual Band chin strap by Knightsbridge Sleep Solutions has a revolutionary dual-band design. The non-elastic blue strap prevents the jaw from lowering. The elastic (black or white) strap provides a gentle upwards force .
the graph shows how the two bands in combination allow the force to be minimized and yet still effective. The jaw Gap axis, at zero when your jaw is closed and on the way when your jaw opens, force is vertical. The force axis is vertical, and what you get is this non-linear force curve, which is due to the combination of the gentle upwards force from the elastic band in combination with the non-elastic band, which only engages when you open your mouth. So this keeps you with your mouth closed where the force is low. Either of those two innovations separately would provide a superior chin strap to anything on the market, but the combination of the two makes this far and away the most effective and comfortable chin strap available.
This chin strap provides unrivaled comfort while still delivering a supportive fit. You can use it alone for snoring, or you can wear it over or under a CPAP mask to reduce or prevent mouth leaks.