Bioresin and nylon devices are lightweight and very comfortable, making them ideal for short-term wear or beginners exploring this type of product.

Because these materials fit closely to the body, regular cleaning is important. We recommend removing the device for a thorough wash at least once a week to maintain proper hygiene.

Nylon — especially our 3D-printed models — is extremely light, smooth, and durable. These models come in multiple sizes and offer a secure, comfortable fit while remaining easy to handle.

For those looking for longer, more consistent wear, stainless steel is often the best option.

Steel models generally have a more open, breathable design, making daily cleaning much simpler without frequent removal.

Once you find the correct size, steel devices offer excellent comfort, stability, and reduced friction thanks to their smooth, polished finish.

Some stainless-steel models include an internal insert designed to keep the device in position.

This feature is usually suitable only for short-term wear, as it requires more frequent cleaning and is not intended for extended or multi-day use.

If you are planning longer periods of wear, choosing a model without this component is generally more practical and easier to maintain.

How to measure:

1. Use a flexible measuring tape or a piece of string with a ruler.

2. Gently wrap it around the area behind the genitals. The tape should be snug, not tight.

3. Note the circumference, then divide the number by 3.14 to find the diameter.

4. Subtract 5 mm (or about 0.2 inches) to account for natural movement and ensure a secure fit.

5. If you are between sizes, it is usually more comfortable to choose the slightly larger ring.

Take the measurement more than once to ensure accuracy.

Step 1:

Stand upright and make sure the area is fully relaxed.

Place a flat ruler gently against the body, starting at the base of the shaft, and measure the full external length.

Write down the number.

Step 2:

Subtract 6–12 mm (¼–½ inch) from your measurement.

This small adjustment ensures a comfortable and secure fit once the device is in place.

Step 1:

Cut a piece of thick string and gently wrap it around the widest part of the shaft while fully relaxed. This is usually measured around the midpoint.

Step 2:

Mark the point where the string meets, then lay it flat against a ruler to find the circumference.

Step 3:

Repeat this measurement two or three times at different times of the day.

Take the average of these readings for the most accurate result.

Step 4:

Divide your average circumference by 3.14 to determine the internal diameter you should look for when selecting a device.