When receiving your new CosyDogs harness this is how it will be set
The position of the two sliders are almost on the fully adjusted setting
Just simply move the sliders towards the clips to make bigger and to the
underbody to make smaller, when adjusting pass the sliders through the elastic to keep the fleece girth flat

The position of the sliders at the half way point
The two sliders have now been adjusted to the half way point, as you see the two sliders are equal the webbing has been pulled together and the sliders passed through the elastics thus keeping the fleece part of the girth flat