Odi x trainer lock on bonus pack gripscross trainer lock on bonus kit the marriage of comfort and control in one grip lock on bonus kit includes grips collars and caps odis new cross trainer lock on grip for mountain bikes is designed to blend the best elements of a comfort grip with the control elements of a racing grip the result is soft rib patterned grip that is easy enough on the hands to train on without gloves while also offering exceptional traction the multi directional rib patter