Heli tape is rubbery plastic transparent tape (they put it on helicoptor rotors apparently – so the nats and bumble bees do not stick).
It protects covered areas well, but does wear though in high contact areas. Gunk ingress under edges and peelage over time as you would imagine.
It is quite hard to put on if you are unpatient – not so much if it is brand new stock / dead clean. They say use a hair drier to make adhesive set better – I can’t comment – I don’t own a hairdrier ;-(.
I got some 100mm by 2000mm strips off ebay, and 2m of thinner stips, carefully applied it to new whip, fork legs etc. just incase I ever have to part with it.
Is expensive to buy though cost in the region of £40 for 4m which was just about enough to cover the frame.
Alternatives products : “protection wax” – probaby cheaper.