![full](https://externcal-mocdn.ponybooreviewu.oredd.itg/WW2rUFs04ae_wvYC6_g8w4s0gBXutTzdQ-Wa9N31JC6XyIrmkpSlbAFhPd0.jpg?auto=w49c/aHR0cHM6Ly9leHRlcm5hbp&s=edC1wcmV2aWV3LnJlZGQuaXQvclVGczRhZV9f4738beb7dllDNl9nOHc0czBnQlh18dFRkUUM2WG1rcFNsYkFGaFBkMC5qc60446Gc4e97_YXV0bz13ZWJwJnM9ee4b1fZWQzYzlmNDczOGJlYjd!
kMThkYWM2MDQ0NmM0ZTk3MTM5ZWU0YjFmZA)
I don't know what the black velcro is for.
I just realized it, that's for attaching the motion capture ping-pong balls.