It's the sound one makes after breaking the sound barrier.

And who, exactly, am I referring to? Why, The Flash, of course -- unless YOU can circle the globe in less than .00037 seconds and run up the side of an office building.

Anyway, our Flash Kaboom Kids 1.0 Seatbelt Belt celebrates the Flash's incredibly loud super-speed with classic Flash images, classic Flash logos, sizzling lightning bolts, and those booming onomatopoeia.

And yes, this Flash belt for kids is made from actual seatbelt material, so it's incredibly resilient and conveniently adjustable.

And, since we're dealing with an actual seatbelt, this Flash belt also features a solid-metal seatbelt buckle with push-button release.