Have Questions? We Have Answers.

• Is It Safe?

  Yes. Restflow is made from soft, medical-grade silicone and doesn't force your jaw into any position or apply pressure to your teeth. Unlike CPAP or mandibular devices, there's no machine, no pressurized air, and nothing pulling your jaw forward night after night - it simply holds your tongue gently in place. Most people find it comfortable within the first few nights, and because it doesn't restrict airflow through your nose or mouth, there's no forced-breathing or "suffocating" feeling some other devices cause. If you're new to using any tongue-positioning device, we recommend easing in with shorter use before wearing it a full night.

• How Does It Work?

  Every night, your tongue naturally relaxes as you fall asleep - and for many people, it partially collapses backward into the airway, dozens of times a night, often silently. Restflow gently holds your tongue forward against the roof of your mouth, removing the mechanical cause of that collapse before it happens. No pressurised air, no jaw repositioning, no mask - just your airway, held open, so your body can move through deep and REM sleep uninterrupted.

• How Do I Use It?

  Place Restflow in your mouth with the rounded end facing back and gently create a light suction with your tongue against the device. It should feel secure but never tight - if it feels like it's pinching or pulling, remove it and reposition. Most people take a few nights to get used to sleeping with it in. We recommend wearing it for short stretches during the day first (even while reading or watching TV) so your mouth adjusts before you rely on it overnight.

• Will It Move My Jaw or Teeth?

  No. Restflow doesn't touch your teeth or reposition your jaw at all - it works entirely by holding the tongue itself forward. This is the key difference from mandibular advancement devices (MADs) and cheap drugstore mouthguards, which clip onto your teeth and pull your jaw into a fixed position, sometimes causing TMJ pain, bite changes, or teeth shifting over time. There's nothing rigid pressing against your teeth or gums with Restflow, so there's no risk of that kind of structural change.

• Can I Use It If I Have Sleep Apnea?

  Restflow is designed for tongue-related airway collapse and general snoring support, not as a substitute for a diagnosed sleep apnea treatment plan. If you've been diagnosed with moderate or severe sleep apnea, we recommend using Restflow alongside guidance from your doctor or sleep specialist rather than in place of prescribed treatment. Many customers use it as a more comfortable option after struggling with CPAP compliance - but any change to how you manage a diagnosed condition should be discussed with your healthcare provider first.

• Will It Affect My Mewing/Tongue Posture Training?

  Not at all - if anything, it complements it. Daytime tongue posture work only accounts for the hours you're awake and consciously holding position. The moment you fall asleep, that control disappears, and your tongue can drift backward for 7–8 hours a night, undoing the very posture you've been training. Restflow simply extends that support through the night, so the work you're putting in during the day isn't being quietly reversed while you sleep.

• Shipping & Returns

  We ship worldwide, with most orders arriving within 5–7 business days. Every order is backed by our 60-day money-back guarantee - if you don't feel a difference, we'll refund you, no questions asked. If your device arrives damaged or you need help with sizing or fit, just reach out to our support team and we'll sort it out quickly.