Snug, not tight
FirmTech says pressure should be firm but never too tight. For overnight wear with the TechRing, comfort comes first, since you will wear it for hours. Loosen it if you feel pain, numbness or coldness.
ED ring size chart
ED ring size chart and fit guide
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FirmTech erection rings come in one adjustable size that fits up to 5.5 inches (14 cm) erect girth, which FirmTech says covers 95% of men.
That makes the TechRing Night Guide size chart short. There is no size to pick: a hook-and-loop strap adjusts each ring to your exact girth. What changes between the three FirmTech rings is how tight they feel and how long you can wear them, so the chart below lists both.
What size ED ring do I need?
If your erect girth at the base is 5.5 inches (14 cm) or less, any FirmTech ring fits. Measure once with a soft tape or string, then use the checker below. If you are above that, contact FirmTech before ordering.
FirmTech ring size chart
| Ring | Sizing | Erect girth | Tightness | Safe wear time |
|---|---|---|---|---|
| TechRing | One size, adjustable | Up to 5.5 in (14 cm) | 3 of 5, secure | Up to 12 hours |
| Performance Ring | One size, adjustable | Up to 5.5 in (14 cm) | 3 of 5, comfort | Up to 12 hours |
| MaxPR | One size, adjustable | Up to 5.5 in (14 cm) | 5 of 5, tightest | Up to 90 minutes |
How to measure girth for an erection ring
Step 1: Measure when erect
Girth changes a lot between soft and erect. The fit limit refers to erect girth.
Step 2: Wrap at the base
Wrap a soft tape or string around the base, where the ring sits, not along the shaft.
Step 3: Read the number
Mark the string and lay it against a ruler. 5.5 in equals 14 cm.
Check your fit
Enter your measurement in inches or centimeters.
Fit tips that matter for overnight tracking
Put it on soft
All FirmTech rings go on before an erection. Drop the testicles through one loop, set the other around the base of the penis, and fine-tune. See the safe wear guide for limits.
Common questions
See all 45 questions on the FAQ page- Will the TechRing fit me?
- One size fits 95% of men, up to 5.5 inches (14 cm) erect girth, according to FirmTech. The hook-and-loop strap adjusts to your exact size, so there is no size to pick. If it does not fit, the 30-day money-back guarantee covers you, and you can start a return through the FirmTech returns portal.
- How do I measure my girth for an ED ring?
- When erect, wrap a soft tape measure or a piece of string around the base of the penis, then measure the string against a ruler. If the result is 5.5 inches (14 cm) or less, FirmTech rings fit. Measure at the base, where the ring sits, rather than along the shaft.
- Is there an ED ring size chart for FirmTech rings?
- FirmTech rings do not come in sizes, so the size chart is short: all three fit up to 5.5 inches (14 cm) erect girth with adjustable tension. What differs is tightness and wear time: TechRing 3 of 5 and up to 12 hours, Performance Ring 3 of 5 and up to 12 hours, MaxPR 5 of 5 and up to 90 minutes.
- How tight should an erection ring be?
- Snug but not tight. FirmTech says to fasten the ring so pressure is firm but never too tight, then fine-tune for comfort with the adjustable strap. If you feel pain, numbness or coldness, loosen or remove it right away. The MaxPR is intentionally the snuggest of the three FirmTech rings.
- Can I put the ring on before I have an erection?
- Yes. FirmTech rings are designed to go on when you are soft, so you can put one on discreetly ahead of time. Open the loop, drop the testicles through, set the second loop around the base of the penis and adjust. It takes a few seconds.
- What if the ring does not work for me?
- FirmTech offers a 30-day money-back guarantee. If a product does not meet your expectations, you can start a return through the FirmTech returns portal with your order number and email. The TechRing has a 1-year warranty, and the Performance Ring and MaxPR each have a 3-month warranty.
Ready to see your nights?
The TechRing is $275 from FirmTech, with free discreet shipping on orders over $100 and a 30-day money-back guarantee.