Choosing the right mouthpiece size is crucial for your comfort and the effectiveness of our product. Here's
a straightforward guide to help you make the best choice:
Which Size Should You Choose?
Large Size
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This is suitable for most adults.
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Ensures a snug, comfortable fit for best effectiveness.
Small Size
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Designed for teens and adults with smaller mouths.
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Slightly narrower and shorter for a more precise fit.
Mouthpiece Dimensions
Size
Length
Width
Height
Best for
Small
4.7 cm
6.0 cm
2.5 cm
Teens & small adult mouths
Large
5.0 cm
6.7 cm
3.0 cm
Most adults
How to find your size
Not sure which size to pick? Here's the easiest way to measure — no guesswork needed.
1. Take a Bite:
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Grab a slice of bread (or anything soft that holds a bite mark) and bite down naturally.
2. Measure Your Bite Width:
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Using a ruler, measure the bite mark from molar to molar — the widest part of your bite.
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Width is the most important measurement, so measure carefully.
3. Pick Your Size for R1:
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Less than 6.0 cm → Go with Small (4.7 cm L × 6.0 cm W × 2.5 cm H) — best for teens & smaller adult mouths.
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6.0 cm or more → Go with Large (5.0 cm L × 6.7 cm W × 3.0 cm H) — best for most adults.
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Tip: Your bite width should be slightly smaller than the size you choose. If you're between sizes, go one size up for a more comfortable fit.
Need help on how to measure?
Watch how to measure your palate size with the simple bite-and-bread method:
Already found your fit? Purchase Now
If you're still uncertain about which size to choose, feel free to reach out to me at
ken@getreviv.com.
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Care & Materials
Care & Materials
Premium cotton blend
Soft, breathable fabric (made up of 97% polyester and 3% spandex)
Lightweight padded interior
Elastic adjustable strap
Care Instructions
Hand wash cold
Use mild detergent
Air dry only
Do not bleach
Do not machine dry
Avoid twisting or wringing
Shipping Information
Shipping typically takes 9-13 days to most destinations including the US. More remote countries can take longer.
Orders typically ship within 48 hours and you will receive a tracking number by email as soon as it ships.