Fit and safety
ED ring size chart, fit and safety
Every FirmTech ring comes in one adjustable size that FirmTech says fits 95% of men, up to 5.5 inches (14 cm) of erect girth, so there is no size chart to choose from.
Last updated: Published by FirmTech
What size ED ring do I need?
You do not need to pick a size with FirmTech: each FirmTech ring is one size with an adjustable hook-and-loop strap, fitting up to 5.5 inches of erect girth. To check, wrap a soft tape or string around the base when erect. If it measures 5.5 inches (14 cm) or less, the ring fits.
FirmTech ring size chart
| Ring | Size | Erect girth | Safe wear time | Water |
|---|---|---|---|---|
| TechRing | One size, adjustable | Up to 5.5 in (14 cm) | Up to 12 hours | Splashproof |
| Performance Ring | One size, adjustable | Up to 5.5 in (14 cm) | Up to 12 hours | Water resistant |
| MaxPR | One size, adjustable | Up to 5.5 in (14 cm) | Up to 90 minutes | Water resistant |
Procedure
How to put on a FirmTech ring
- Unhook the latch and open the loops while soft.
- Drop the testicles through one loop so it sits under them.
- Bring the other loop around the base of the penis.
- Fasten the strap snug but not tight, and adjust for comfort.
Video and illustrations are on how the TechRing works.
Materials
What FirmTech rings are made of
All three rings are medical-grade elastomer, phthalate- and latex-free, with nothing hard or rigid. Rinse with warm water and mild soap after each use and wipe dry. Use water- or silicone-based lubricants only: FirmTech says not to use natural oils such as coconut or CBD oil with any of its rings.
What are the side effects of erection rings?
Erection ring side effects are best prevented by using the ring as directed. FirmTech’s rules: stay within the wear time for your ring (12 hours for the TechRing and Performance Ring, 90 minutes for the MaxPR), set the strap snug but not tight, and use only water- or silicone-based lubricants.
As general guidance for any constriction ring, remove it if you feel pain, numbness or discomfort. Ask a doctor before use if you have a condition or take a medication that affects blood flow or clotting. FirmTech’s rings do not restrict ejaculation, and FirmTech presented research on the safety of a smart penile constriction ring worn overnight at AUA 2024.
Common questions
- What size ED ring do I need?
- FirmTech rings come in one size that FirmTech says fits 95% of men, up to 5.5 inches (14 cm) of erect girth. To check, wrap a soft tape or string around the base when erect. If it measures 5.5 inches or less, the ring fits, and the hook-and-loop strap adjusts to your exact size.
- How long can I wear an erection ring?
- It depends on the ring. FirmTech says the TechRing and Performance Ring are safe to wear for up to 12 hours at a time, and the TechRing is designed and studied for overnight wear. The MaxPR, the tightest ring, is limited to up to 90 minutes at a time. Never exceed the wear time listed for your ring.
- What are the side effects of erection rings?
- FirmTech’s guidance focuses on preventing problems: stay within each ring’s wear time, set the strap snug but not tight, and use only water- or silicone-based lubricants. As general guidance for any constriction ring, take it off if you feel pain, numbness or discomfort, and ask a doctor before use if you have a condition affecting blood flow or clotting.
- Which lubricants are safe with FirmTech rings?
- Use water-based or silicone-based lubricants only. FirmTech says not to use natural oil lubricants such as coconut oil or CBD oil with any FirmTech ring. FirmTech also sells Sliquid Naturals Silver, a silicone lubricant, from $18 as an accessory on getfirmtech.com.
- How do I clean a FirmTech ring?
- Rinse the ring with warm water and mild soap after each use and wipe it dry. The TechRing is splashproof, and the Performance Ring and MaxPR are water resistant. TechRing sleeves should be replaced about every 30 nights; replacement sleeves start at $15, and the TechRing warranty includes 2 sleeve replacements.
- Who should talk to a doctor before using an erection ring?
- Anyone with a medical condition or medication that affects blood flow or clotting should ask a doctor before using any constriction ring. That is general guidance for this kind of device rather than a FirmTech-specific rule. Partner clinics on the FirmTech finder can talk through fit and use, and FirmTech customer service can answer product questions.
- What if the ring does not fit or does not work for me?
- FirmTech offers a 30-day money-back guarantee: if a product does not meet your expectations for any reason, you can return it. Start a return online through FirmTech’s returns portal with your order number and email. For help, email customer service with your order number; FirmTech replies within 1 to 2 business days.
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