I love my Oura Ring 5 but these are the sleep tracking rings to buy in today's Labor Day sales — from just $40

(Image credit: Future) As a sleep writer, I've been hands-on with all kinds of sleep-boosting tech. But it's the Oura Ring 5, from $399 at Oura, that I won't let out of my hands. This smart ring is the most comfortable wearable I've ever worn and the daily reports deliver an accurate insight into my sleep.For that reason, the Oura Ring 5 has earned its place as the best sleep tracker we've tested. However, it's a pricey piece of tech that isn't discounted in today's Labor Day sales — so I've set my sights on the Oura Ring 4 instead. Now from just $244.30 at Oura, this smart ring is nearly as good as its upgrade, at a fraction of the cost.It's not the only sleep gadget worth checking out in the Labor Day sleep and mattress sales, and I've rounded up my favorite smart ring deals below. And as the season change can cause negative shifts in sleep health, now's a great time to get a handle on your rest. Follow Tom's Guide on Google News and add us as a preferred source to get our up-to-date news, analysis, and reviews in your feeds. Get instant access to breaking news, the hottest reviews, great deals and helpful tips. Ruth is an experienced Senior Staff writer at Tom’s Guide, covering all things sleep and mattresses. She writes to help people sleep better, from how-tos to the latest deals to mattress reviews, and has interviewed an array of experts who share her passion. She is also our specialist on memory foam — she’s flown around the world to see memory foam being made — and leads our hotel mattress content. She has a deep interest in the link between sleep and health, and has tried enough mattresses, from Helix to Nectar to Simba, to know the right bed really can make a difference to your wellbeing. Before joining the team at Tom’s Guide, Ruth worked as a sleep and mattress writer for our sister website, TechRadar.