SOLAS tapes are have a reflective surface comprised of encapsulated glass lens beadlets.
This tape (3150A) is highly flexible and adheres to rubber-coated cloth, vinyl-nylon laminated cloth, cured polyester cloth, PVC, aluminum, and helmets.
Approximate thickness of 3150A is 11-mils (0.011″) and 6755 is 13-mils.

3" x 16.5' Holographic Tape - Mini Stars
1" x 150' Holographic Rainbow Sheen Silver Tape
2" x 12" 3M 983-23 Diamond Grade Conspicuity Tape - Fl Yellow 

