IT'S there to save your life in the case of an accident.
But did you know that if you're plus size, there's a correct position to wear your seatbelt?
Well, Lindsey has only just realised she's been wearing hers wrong.
She took to TikTok to share her discovery, explaining: "Recently I came across a video that said if you’re fat and wearing your seatbelt wrong, it could literally kill you in an accident.
"So I’m going to show you how to properly wear your seatbelt if you’re fat."
Getting into her car, Lindsey showed how she would ordinarily have worn her seatbelt - across her stomach.
"That’s going to rip through your organs and kill you," she warned.
"What you’re supposed to do is wear your seatbelt down here, under your stomach, so that it will hit your pelvis, and you will survive."
"Shoutout to the angel @roastbeefqueeef for sharing this life saving info!!! Stay safe my fat babes," she added in the caption.
"This is 100% true and I have unfortunately seen the outcomes of wearing it improperly."
Some people admitted they'd be "embarrassed" to wear the seatbelt so low, as it would accentuate their stomachs.
But others said there are more important things to worry about.
"For those who are embarrassed just know most people are probably too self conscious about themselves to notice you," one wrote.
"My mum tucks under & pulls her shirt over it so you can’t even see it!"
And it's not just plus size people that Lindsey's advice is applicable for - it's also the same for pregnant women.
"Same thing for us pregger ladies! wear it low!" one wrote. "This is great advice! thank you for posting this!"
"Yes!!! I was pregnant and thankfully would adjust my belt low daily," another wrote.
"50mph accident@37 weeks. Baby is fine! I broke my leg. Car totalled!"
The official advice from the NCT is that you should "make sure the lap belt is worn as low as possible under the abdomen and the baby".
