What Lauren says - This is a very lightweight, unobtrusive prolite anti-slip pad. Designed to minimise movement under the saddle with minimum bulk which could alter saddle fit. A very handy item for those super fit or rounder types.
What the Manufacturer says - A superb, slimline anti-slip measureUltra-lightweight and shaped to fit the saddle. Place it directly against the back to stop both saddle and saddlecloth moving, or use under the saddle if the saddlecloth tends to slide out. For maximum saddle stability for cross-country or showjumping, sandwich the saddlecloth between two of these pads.