Devices to Stop Sleeping on Your Back When You Snore

If your snoring gets worse when you roll onto your back, start with the free option: a tennis ball sewn into the back of a T-shirt. If a sleep study has diagnosed you with mild to moderate apnea that is worse on your back, the FDA-cleared Zzoma Positional Sleeper is the pick. If you want a physical block for less money, choose the Rematee Bumper Belt. If you cannot stay on your side at all, a bed wedge pillow that raises your head is the better buy.

The ranking below is based on three things: what published trials and medical reviewers found for each type of device, what each one costs, and whether people keep using it. This blog does not test products. Every figure comes from the source named next to it.

All four options share one limit. They only help snoring that depends on sleeping position. If you snore just as loudly on your side, none of them will fix it.

The American Academy of Sleep Medicine, which writes the U.S. clinical guidelines for sleep disorders, sets the condition plainly in its patient guidance on positional therapy. Positional therapy is the practice of keeping yourself off your back. The AASM says it is for people whose breathing is interrupted mainly on their back and normal on their side or stomach. The AASM treats it as an add-on treatment, often used alongside CPAP or a dental appliance, and not as a replacement for either.

You can check your own pattern at home. Ask a partner to note which way you are lying when the snoring is loudest. If you sleep alone, use a snore-recording app and compare the noisy stretches with the position you wake up in.

The check matters because of what a Belgian trial found. Researchers in Brussels screened 102 patients who had been diagnosed in a sleep lab with positional obstructive sleep apnea, meaning apnea that worsens on the back. Only 19 were enrolled. The other 81% did not spend enough time on their backs at home to qualify. As the authors put it, "supine sleep is infrequent in the home setting." A device that stops you lying on your back cannot help much if you rarely lie there.

If your snoring comes with gasping, choking or waking at night, see a sleep doctor before buying anything. Our piece on telling if it's sleep apnea explains what to look for.

The method is simple. Sew or pin a pocket between the shoulder blades of a snug T-shirt, put a tennis ball in it, and sleep in the shirt. When you roll onto your back, the ball pushes into your spine and you roll off again.

A consumer cost breakdown from Doctronic puts the cost at $5 to $10. It rates the method low for comfort and moderate for effectiveness. That trade-off is the reason it comes first: it is the cheapest way to learn whether staying off your back quiets you down.

The drawback: it is uncomfortable. Harvard Health names discomfort as a major reason people give up on positional devices over time.

Skip it if: your back or shoulders already hurt, or a sleep study has found apnea. In either case you need something built for the job.

The Zzoma is worn around the upper torso. Sleep Review, a trade magazine for sleep professionals, includes it in its guide to positional sleep aids and lists it at $289.95. It is designed for mild to moderate sleep apnea. It is also one of only two FDA-cleared devices among the six in that guide.

FDA clearance is the reason it holds this spot. Products sold only for snoring can go on sale without clearance. A device marketed to treat positional obstructive sleep apnea needs it. Sleep Review notes that cleared devices are generally prescription-based. If your doctor has confirmed apnea that is worse on your back, the Zzoma is the option made and regulated for your diagnosis.

The drawback: price, and in most cases the step of getting a prescription. Neither source in this article gives an outcome figure for the Zzoma specifically. Its standing comes from its clearance and its category, not from a published head-to-head result.

Skip it if: you snore but have no apnea diagnosis. The cheaper options below target the same problem.

The Rematee is a belt with inflatable bumpers across the back. It works like the tennis ball, but it is softer and stays in place.

No published trial cited here tested the Rematee itself. The nearest evidence is for inflatable vests. A literature review in Sleep & Breathing, summarized by Harvard Health Publishing, found that inflatable vests cut snoring rates by more than half in people whose snoring depends on position. The same review warns that "the effectiveness of positional aids varies" from product to product, not just from person to person. A belt is similar to a vest, but it is not the same thing.

None of the sources lists a price for the Rematee. Doctronic places positioning belts as a category at $50 to $150, with moderate comfort and good effectiveness.

The drawback: the evidence is for the category, not this product. You are also still sleeping with something bulky strapped to you.

Skip it if: the tennis ball already works and you can put up with it.

A wedge pillow works differently from the other three. It does not keep you off your back. It raises your head and upper body, so the back position you end up in anyway is less flat. The Sleep & Breathing review cited by Harvard Health found that wedge pillows significantly decreased snoring.

One result points the other way, so it helps to separate two kinds of pillow. In the Brussels trial, the Posiform positional pillow, which is designed to keep you on your side, cut back-sleeping by only 7%. That result was not statistically significant. Patients rated their willingness to keep using it at 2 out of 10. A pillow that tries to hold you on your side is a different product from a wedge that lifts your head. The evidence favors the wedge.

The drawback: some people slide down the slope during the night or find the angle hard to get used to.

Skip it if: your snoring stops completely on your side. A device that keeps you off your back targets the problem more directly.

Whoever ends up on the snoring side of the bed, the partner may still need help in the meantime. A partner kept awake can also try masking the snore with sound.

A newer type of device sits on the chest or neck, senses when you roll onto your back, and vibrates until you turn over. The early results are strong, but the evidence for buying one at home is not complete yet.

• Real-world use: in the Brussels trial, the vibrating Somnofit belt cut back-sleeping by 26.4%, a statistically significant result. Patients still rated their willingness to keep using it at only 4 out of 10.
• A small early trial: in a pilot study of the SoftSleep device in 20 healthy volunteers, time on the back fell from 56.01% of the night to 7.84%, with no loss of sleep quality. The volunteers did not snore and the trial lasted two nights.
• Alarm-only wearables: Harvard Health reports that simple wearables that just alert you when you are on your back showed no significant improvement in snoring.
• Price: the one FDA-cleared option in Sleep Review's guide, the Night Shift Sleep Positioner, is listed at $495.

• Tennis ball in a shirt: for anyone checking whether position is the problem, for under $10.
• Zzoma Positional Sleeper: for diagnosed mild to moderate apnea that is worse on your back.
• Rematee Bumper Belt: for snorers who want a softer, steadier block than a tennis ball.
• Bed wedge pillow: for people who end up on their backs anyway.

If none of these fits, watch for one study. The "Pavlov" study, presented at the 2026 American Thoracic Society conference and reported by News-Medical, had apnea patients use a vibrating device for six months. A year after they stopped, more than two-thirds were still sleeping on their side with their apnea under control. The researchers want to find out which patients respond best and to get the findings into treatment guidelines. Until that happens, a vibrating trainer is something to discuss with a sleep doctor rather than buy on impulse.