Acavallo Adjustment Shaped Gel Back Riser is a gel adjustment shim pad that easily be cut to size and used either individually or in pairs to improve saddle fit and correct bi-lateral imbalances, relieve unwanted pressure and low spots. The non-slip surface ensures security of placement. Product Details: One size Can be cut to size Gel shim pad Relieves pressure Non-slip surface Improve fit and correct imbalance Can be used individually or in pairs Sold individually