10201C - Racing Optics Xstack Helmet Tear Off Fits Simpson: Voyager, Side Pro Elite and Universal Straight Fit Fits Simpson: Voyager, Side Pro Elite; Universal Straight fit World's most optically advanced tearoff technology 10 layers of distortion free laminated tearoffs. 3 stacks of 10 tearoffs for 30 total per sleeve. Post hole distance is 11 1/2 "