Are type one style patches waterproof? Unpacking device protection for diabetes

October 10, 2025 •

3 min read

According to manufacturers and user reports, patches designed for type 1 diabetes devices—often colloquially called "type one style patches" or named after the brand Type One Style—are indeed manufactured to be waterproof and sweatproof. These adhesive overlays help secure continuous glucose monitors (CGMs) and insulin pump sites, allowing users to shower, swim, and exercise without dislodging their crucial medical equipment.

Quick Summary

Many adhesive patches for diabetes devices are waterproof, providing extra security for CGMs and insulin pump sites during water activities and intense exercise. However, the water-resistance limitations of the underlying device itself must also be considered for safe and effective use.

Key Points

Waterproof and Sweatproof: Many brands, including Type One Style, offer patches specifically designed to be waterproof and sweatproof, protecting diabetes devices like CGMs.
Device vs. Patch: A patch's waterproof rating does not override the water-resistance limitations of the underlying medical device. Always consult device manufacturer guidelines for depth and duration in water.
Long-Lasting Adhesion: Patches use strong, medical-grade adhesives to reinforce the device's own sticker, extending wear time and preventing premature detachment during showers, swims, or exercise.
Enhanced Skin Protection: Hypoallergenic materials and proper skin preparation help minimize skin irritation and improve adhesion, especially for sensitive skin.
Proper Application is Key: Ensuring the application site is clean, dry, and free of oils is crucial for maximum adhesion and effectiveness of the waterproof patch.
Reinforcement is an Option: Additional adhesive barriers or tapes can be used to further secure a patch if edges begin to peel.

Understanding the Term 'Type One Style Patches'

The term "type one style patches" can be interpreted in two ways. It can refer to the brand name Type One Style, which explicitly markets its patches as waterproof, sweatproof, and frayproof for devices like the Dexcom G6. However, the term is also widely used colloquially to describe the general category of adhesive overpatches worn by people with type 1 diabetes to secure their CGMs and insulin pump infusion sets. Regardless of the specific brand, the primary purpose of these patches is to reinforce the device's original adhesive, protecting it from moisture, impacts, and daily wear and tear.

The Function and Effectiveness of Waterproof Patches

Waterproof patches are made from specialized medical-grade, latex-free, and hypoallergenic materials designed to stay bonded to the skin even when exposed to water. These materials often include synthetic fibers or flexible polyurethane films that dry quickly and allow moisture vapor to escape, reducing skin irritation. A strong adhesive backing ensures the patch—and the device it covers—remains secure for an extended period, sometimes up to 14 days or longer, matching or exceeding the device's wear time.

Patches and Device Water-Resistance: What to Know

It is crucial to understand that while the patch may be fully waterproof, the underlying device (like a CGM sensor or insulin pump) has its own specific water-resistance rating set by the manufacturer. For example, a Dexcom G6 sensor may be water-resistant to a certain depth for a limited time, while an Omnipod pump may be fully waterproof. The patch's role is to ensure the device stays attached to the skin, but it cannot override the device's own limitations. Disregarding manufacturer guidelines can lead to signal loss or device damage.

Maximizing Adhesion and Protection

To ensure your waterproof patch performs optimally, proper application is essential. Follow these steps for the best results:

Prepare the skin: The sensor site should be flat, clean, and completely dry before application. Avoid applying lotions, oils, or sunscreens to the area.
Use an adhesive barrier: For extra security and sensitive skin, apply a skin-prep wipe (like Skin-Tac) and let it dry completely before attaching the sensor and patch.
Apply smoothly: When placing the overpatch, smooth out any wrinkles or air bubbles to ensure full contact with the skin. For best results, allow the patch to fully set for several hours before intense activity or water exposure.
Pat dry: After showering or swimming, gently pat the patch dry with a towel instead of rubbing it.

Leading Waterproof Patch Brands

Many brands specialize in waterproof adhesive patches for diabetes devices, offering various features and designs. Here is a comparison of some popular options:


Brand	Devices Supported	Waterproof & Sweatproof?	Typical Wear Time	Key Features
Type One Style	Dexcom, Freestyle Libre, Medtronic	Yes, 100%	Up to 21 days	Clinically certified, hypoallergenic, and fray-proof.
Skin Grip	Dexcom G6/G7, Libre, Omnipod, Medtronic	Yes, 100%	10-14 days	Medical-grade, latex-free, and available with or without a cutout.
Simpatch	Dexcom, Freestyle Libre, Guardian	Yes	10+ days	Strong hold, breathable material, and hypoallergenic adhesive.
ExpressionMed	Freestyle Libre, Dexcom	Yes	10+ days	Wide variety of fun designs, flexible, and hypoallergenic.

Conclusion: The Final Word on Waterproofing

Yes, type one style patches are manufactured to be waterproof, and they serve as an invaluable tool for protecting diabetes technology. They offer a reliable layer of defense against water, sweat, and other forces that could compromise the device's adhesion. For individuals with an active lifestyle or who simply want added security, using a waterproof overpatch is a smart strategy. However, always check the manufacturer's water-resistance specifications for both the patch and the underlying CGM or insulin pump before engaging in water activities. When properly applied, these patches offer peace of mind, allowing users to focus on living their lives without constantly worrying about their medical devices coming loose.

For more information on insulin pumps and device types, refer to the Cleveland Clinic's guide on insulin pumps.

Frequently Asked Questions

Yes, waterproof patches are designed to stay secure during swimming and other water activities. However, you must also follow the specific water-resistance guidelines provided by your CGM's manufacturer regarding depth and duration in water.

Wear time varies by brand and user activity, but many waterproof patches are designed to last for the full wear time of the device, typically between 10 and 14 days. Some brands even claim up to 21 days.

Waterproof and sweatproof patches are specifically designed to maintain adhesion during intense exercise and heavy sweating. The quick-drying material helps prevent moisture from loosening the adhesive.

Most reputable brands produce patches using hypoallergenic, medical-grade, and latex-free materials suitable for sensitive skin. For individuals with a history of skin reactions, it is recommended to test a patch on a small skin area first.

No, a single, high-quality waterproof patch should last through multiple showers and swims. They are designed to withstand repeated water exposure throughout the device's wear time.

Before inserting the sensor and applying the patch, ensure the skin site is completely clean, dry, and free of any lotions or oils. Using an alcohol wipe and letting it dry completely is a standard preparation method.

If the edges begin to peel, you can use a small amount of medical tape, such as Hypafix or Blenderm, to reinforce the patch and prevent further lifting. However, a properly applied, high-quality patch should stay secure for the intended duration.