Cashel Step-Up Stirrup Solve the age old problem of not being able to comfortably step up in your stirrup without the use of a mounting block with the Cashel(R) Step-Up Stirrup in a Bag. It conveniently stores in its own bag so you can carry it on your saddle horn out on the trail. The Step Up simply attaches to the saddle horn and around the back of the cantle to create the extra step you need. It features an adjustable strap and stainless steel hardware.