This double sided merino wool liner is made with 100% merino wool fleece on synthetic backing. This liner is made with a velcro opening at the front edge.  If you would like a 1/4" insert for extra padding you can select that in the drop down menu. 
 
The full size is for our normal size bareback pad. The petite is for our petite size bareback pad and the mini is for our mini sized bareback pad. (do not bother ordering an insert for the mini as it is not made to accommodate one) We are now offering a liner for our new Westy as well. 
 
Please note that a "low" wither relief has almost zero spinal contour. 
 
You can use any saddle pad or liner under your bareback pad as long as it is smooth, especially along the spine, with no abrupt edges under your weight.