Square, cotton saddle pads provide an inexpensive saddle padding for horses with straight withers.
The square (or straight) saddle pad is for horses which have straight, or round, mutton-withered backs.
Quilted cotton blended with polyester is often used as the shell material on saddle pads. The advantages of cotton are that it is light weight, is good at wicking sweat, and is available in many colors. Disadvanteges are that cotton does not wear particulary well.