Struggling to find a comfortable set of headphones for falling asleep, I've tried everything from earbuds to sleep bands without success. As a side sleeper, nothing seemed to fit the bill.

That changed when I got my hands on the, touted as "perfect for side-sleepers" and boasting to be the world's thinnest at '70% thinner than average buds'. It was time for a real-world test.

Philips claims their soft, super-thin sleep buds are designed to nestle comfortably in the ear, catering to all sleeping positions, especially side sleepers. The design includes an over-ear loop to prevent them from falling out, and they come with five sizes of extra-soft silicone ear tips for a personalised fit, reports .

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They're equipped with “powerful” biosensors that detect when you're falling asleep and automatically fade the audio as you drift off. While testing, I never noticed the point at which the audio turned off - which can wake me up if it cuts out suddenly. With the , I didn’t notice they’d switched off until I woke the following morning.

Pros:

• Comfortable with plenty of customisable tips to fit different ear shapes and sizes.

• Grips well to the back of the head, even with long hair.

• The Kokoon app provides soothing soundtracks, meditations, and stories.

Cons:

• Battery life: My usual earbuds will last for 3-4 days thanks to their charging case, but these need charging every night or so.

• Price vs sound quality

The first night was slightly uncomfortable in one ear, on the side I tend to sleep on, but after readjusting and trying the different-sized tips, I’ve found my perfect fit. They stay in place brilliantly, thanks to the wired design which hooks around your ear, meaning you don’t have to go fishing for lost earbuds in your bed in the middle of the night.

The Kokoon app itself is impressive - complete with a library of meditation tracks, sleep coaching, soothing music, and soundscapes. It offers a lot of similar features to Headspace, albeit on a smaller scale.

According to Philips, the sensitive biosensors also , so you can track your patterns in and improve your sleep habits over time. The app breaks down your sleep patterns into a colour-coded chart, mapping out times you were awake, in light sleep, REM sleep, deep sleep, and the time you removed your headphones.

It also tracks how long it takes you to fall asleep after putting your headphones on. This is what really impressed me - I would typically spend an hour or so scrolling or listening to an audiobook before dropping off, but according to Kokoon, on my first night using the Philips headphones I fell asleep in just 16 minutes.

I put this down to the ability to layer the soothing background tracks over your other audio. My current Audible obsession is , which I’ve been listening to nightly. The addition of a subtle soundtrack beneath the audiobook was so soothing.

One thing I would have liked to see would have been a longer battery life - remembering to charge them daily means I occasionally have to switch back to (which tend to fall out in the night as a fidgety sleeper). But I’m a big fan of the sleek hard shell travel case, which protects the delicate buds and wires while on the go.

If you're obsessed with sound quality, these might not be up to your standards if you're after crystal-clear sound. But for what most customers want from sleep headphones - a comfortable headset to listen to audiobooks or meditations as they drift off - they do the job and then some.

Currently retailing at £188.99, the also include 12 months of free premium access to the Kokoon app, which is also compatible for audio layering with Apple Music, Audible, Spotify, Calm and Headspace.

If you're still searching for your perfect sleep headphones, consider trying the from Amazon, which combines the function of headphones and an eye mask. While I personally didn't find it a comfortable fit for my ears, it has more than 11,000 five-star reviews on Amazon from shoppers praising its "comfortable fit".