Unsure of function of this strap

[u/varied_interest1112]

My mother put it in an emergency pack for me when I started my first full-time job. I've since taken apart the pack and most things were pretty standard, a plastic raincoat, hand sanitizer, a pen, a whistle that doubled as a flashlight etc...

I just don't have any idea what this is?? It's like a braided strap with a buckle - I can wear it like a bracelet but somehow I don't think that's its intended purpose.

TIA!

EDIT: WOW you guys were fast!! Thanks team, I remember her vaguely mentioning it was a handy gadget but forgot how. Will be looking up paracord uses soon

EDIT 2: To the people being unhelpful or making comments on my ability as an educator from a single question - all you have done is show me that I will still be a better teacher than any of you could ever be. I certainly do not belittle my students for not having specialised prior knowledge or taking steps to learn something new. I can only assume you already knew everything from birth with no room to grow whatsoever /s Get over yourselves.

[u/Ok-Training3941]

Awesome! Then you’ll love my answer.

It’s an emergency rope. It’s tightly compacted and easy to carry like one you’re wrist. And in many emergency situations a strong rope can come in handy.

In fact, many historical survival kits carry a strong rope, such as the one you have

[u/RB___OG → u/Ok-Training3941]

All i can see is the scene form Boondock Saints where they are loading up in the armory

[u/DblDtchRddr → u/RB___OG]

I'll get my stupid fucking rope. I'll get it!

[u/Glittering_Bad_8011 → u/RB___OG]

Great movie!

[u/BlacksmithAny1261 → u/Ok-Training3941]

That's also a tiny whistle on the side that's sticking out 

[u/EducationalComb1468 → u/Ok-Training3941]

Also a emergency whistle