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Are CGM sensors waterproof?

Discover how waterproof the Sibionics G3 sensor is.

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Written by Anna Tondo

CGM sensors are water-resistant, but not fully waterproof. They can handle everyday water exposure, but prolonged submersion or vigorous water activity may cause the sensor to loosen, fall off, or give unreliable readings.

βœ… Generally safe for:

  • Showering 🚿

  • Bathing πŸ›

Swimming and water exposure

The Sibionics G3 is rated IP38 and can be submerged in up to 1 metre of water for up to 1 hour, making it suitable for short swims and light water exposure. However, prolonged swimming or frequent water exposure may weaken the adhesive over time.

⚠️ Use caution with:

  • Swimming for long periods

  • Water sports or high-movement activities

  • Saltwater or heavily chlorinated pools

❌ Not recommended:

  • Extended swimming sessions

  • High-impact water sports

  • Repeated long submersions over multiple days

Vively recommendation: We generally advise avoiding swimming with your CGM where possible, as water exposure significantly increases the risk of sensor detachment.

How to protect your sensor around water

  • Use a waterproof adhesive patch or tape over the sensor.

  • Pat the area dry gently after water exposure β€” avoid rubbing.

  • Minimise arm movement while wet.

Final thoughts

The Sibionics G3 is designed to handle everyday water exposure, but isn't built for extended swimming. If your sensor falls off or stops working due to water exposure, replacement may not be covered.

If swimming is unavoidable, take extra precautions or consider timing sensor changes around water activities.

If you're unsure how water exposure might affect your sensor, please email contact@vively.com.au.

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