$284.20 after 6% cashback via CashRewards.
These aren't Bluetooth earphones that you can use to listen to music to. They only have one purpose - to help you sleep, hence the name. They passively block noise and play back soothing ambient sounds like white noise, a stream, a campfire, etc.
Some people are totally fine with cheap foam earplugs. Lucky them! For those who don't find them comfortable, or suffer from tinnitus (YMMV), these might work.
Reviews range from excellent to average. Most complain about the $379 price. $284 is still quite a lot, but if it works, it just might be worth it. Yes they're expensive, but so is a OnePlus 6T vs a Pocophone. :)
Bose offers a 30-day trial - you can return it for a full refund. I haven't tried these myself, but at this price I'm quite tempted.
I have cheap foam earplugs, silicone Surefire earplugs, and professional custom-molded sleep plugs. For me, the foam ones are terribly uncomfortable - they give a plugged-up feeling and get warm halfway through the night. The silicone ones are softer but the stalk pushes them deeper when I turn on my side. The custom-molded ones are good, but the seal can be broken easily if I move my jaw too much as the shape of my ear canal can change.
Some people might suggest seeing a sleep therapist instead. I'm genuinely curious as to what advice a sleep therapist would offer someone who's a light sleeper. Wear earplugs? ;)
Another suggestion is to use a noise-masking app on a phone. That'll work if sleeping alone, but if you're sleeping with a partner or in a group (no not that, I mean e.g. when camping or in a dorm!), others might not appreciate that.
CHOICE review
TechRadar review
Also available at Myer without the cashback with code PMYERGIFT.
I read the reviews and still don't understand why they don't let you use these for regular music. Apart from a comfortable design I don't see what differentiates these from any in ear noise cancelling earbuds.
As far as I know I don't have chronic noise related sleep issues, so even if they're less comfortable I'll stick to using earplugs and my Sony WH-1000XM2 headphones to block out annoying sounds when travelling.