Flashback Friday - Slap Bands/ bracelets

So today I got a reallly exciting parcel from RNLI, and... without giving too much away right now ... it took me back to the exciting fashion accessory of the late 80's/ early 90's .... Slap bands/ bracelets.

I remember the fun we had.... until they got banned... of taking these bands made of layered, flexible stainless steel bistable spring bands sealed within a fabric cover into school and hitting them against the forearm which caused the bands to spring back into a curve and wrap around the wrist, securing the bracelet to the wearer.  Once coiled you could easily straighten it out and start again.