The Optitrack motion sensor pack
The Optitrack motion sensor pack consists of 35 markers and bases w / X , of 6 M4 reflective markers 12.7mm in diameter and 2 rigid body bases for hands. It was designed to work with the standard skeleton model in the software Motive: Body by Optitrack. In addition, the semi-soft M4 markers provide cushion for impacts. The pack is recommended for all motion capture applications.