It is some strong plastic material, and it does not leave a mess behind when removed (at least: I haven't had this problem)

The plastic they use in this tape is so strong it must be cut

This tape looks like it is heavy plastic with a fiber mesh melded into the plastic when it was soft, with the adhesive added to this after the two had cooled

So picture that stuff with a layer of flexible plastic on one side, and thick/strong glue on the other.

10X tape is a thick layer of glue, a checkerboard of interlocked plastic-like strips, and a thick layer of clear plastic on top.

The plastics slider cracked