The Only Hair Elastic I Will Ever Use, From Now Until Eternity

Girlfriend Collective

I have the kind of thick, wiry hair that most definitely holds a curl, almost to a fault-any kind of impression made in my strands, intentional or not, is definitely going to stay there until the next time I wash it. It's a plus on the odd mornings when I wake up with just the right amount of rumpled bedhead-not so much when I'm about to work out but don't want to suffer a days-long ponytail dent, especially since I only wash my hair once a week and try to avoid heat-styling at all costs. ("There's got to be a better way!" she said in her best infomercial voice.)

So when an array of odd-looking coils that touted themselves as "traceless hair rings" landed on my desk last year, I was immediately intrigued. Fast-forward to now, and they're all I use-I have a pile in my desk drawer, another in my purse, and extras upon extras in my gym bag, which is where they really shine.

Invisibobble Traceless Hair Ring $8Shop

Meet the Invisibobble, the brilliant hair elastic I wish I had been clever enough to invent. Shaped exactly like a loop of old-school telephone cord (that's a pre-iPhone reference, kids), the unique structure is actually its genius: The grooves not only lock any updo firmly into place, but they also slip deftly between locks of hair instead of just squeezing the whole bunch-and that translates to a dent-free mane once you let your hair down.В Putting my hair up to hit the yoga mat no longer means I have to live in a topknot for the next three days.

While the clear version is basically invisible to passersby (another plus!), I kind of love that they're also available in a variety of punchy pastel colors, like a modern take on the scrunchie. AndВ apparently, the secret's out on these tiny workhorses-I've seen no less than three Invisibobble-ed updosВ in our office today. Four, if you count my own.

Plus, $8В for ultimate hair convenience?В I'll take one in every color.

Next up, see which workout best suits your body type.