Consist of tearoffs laminated together that install as one piece and provide high visibility, low reflection while eliminating fog between layers. SpeedStack (clear) contains 3 laminated stacks of 10 tearoffs (total of 30 tearoffs). AmberStack (amber) contains 4 laminated stacks of 7 tearoffs (total of 28 tearoffs). NOTE: When using Part #'s ROC10231C & ROC10231A on your Champ helmet the tearoff button must be relocated.