Could anyone recommend me the strongest elastics in the market? Not taking into consideration of the visibility.

P.S. Please don't recommend a rubber band :(

Strongest as in most stretchable? You ever thought of using a condom (pun not intended)?

Ah my bad. I guess I didn't state my question clear enough. Was looking for elastic threads. Never quite considered using condoms.

I think I found my answer this morning.

Basically use 3 strands instead of one.

Thanks people.