FirmTech TechRing is a constriction ring with embedded sensors that log erection duration and firmness. Listed $275, $275 on myfirmtech.com as of 2026-09-16 (listing showed sold out). Pos-T-Vac constriction rings is tension rings from a vacuum-therapy brand, meant to follow a pump session. Listed check the maker’s current listing, sold as VED accessories; confirm at source.
Neither page on the internet can wear the device for you. Fit, and whether a stretch silicone ring is actually your problem, decide more than the brand.
At a glance
| FirmTech TechRing | Pos-T-Vac constriction rings | |
|---|---|---|
| Listed price | $275 | check the maker’s current listing |
| Material | adjustable band plus electronics | medical elastomer |
| Sizing | adjustable | sized for the Pos-T-Vac system |
| Medical-device listing | maker says yes | maker says yes |
| HSA/FSA (maker’s claim) | claimed | not claimed |
| Vibration | no | no |
| Anaesthetic | no | no |
| Best for | men who want a log for a urologist, not just a tighter erection | Pos-T-Vac owners replacing worn rings |
| Not for | anyone who just needs to stay hard tonight | men without a vacuum device |
Prices for other brands are approximate and move. Ours are the store listing.
Price
Pos-T-Vac constriction rings is the cheaper of the two as listed. sold as VED accessories; confirm at source. Confirm the other at source before you treat this as a quote.
How they actually work
FirmTech TechRing: constriction plus tracking. The ring still does not create inflow. Pos-T-Vac constriction rings: pump for inflow, ring for outflow. Same two-step as any VED protocol.
Sizing
FirmTech TechRing sizing: adjustable. Pos-T-Vac constriction rings: sized for the Pos-T-Vac system.
Regulatory sticker
Both are sold with medical-device positioning. Listing is not the same as FDA approval of effectiveness. See each maker’s own language.
Who should buy FirmTech TechRing
men who want a log for a urologist, not just a tighter erection. Strengths the maker can honestly claim: data if you want it; adjustable; aimed at men working with a clinician. Limits: you pay for sensors you may never look at; charging and app overhead; still a ring.
Who should buy Pos-T-Vac constriction rings
Pos-T-Vac owners replacing worn rings. Strengths: matches an existing pump; clinical catalogue. Limits: not a general-purpose cock ring; you are buying into a pump brand.
The cheaper test from this shop
You do not have to pick FirmTech TechRing or Pos-T-Vac constriction rings on the first order. Mammoth Ring or Red Tiger ($39.99 / $24.99) is the Mammoth Force version of this job: a stretch silicone ring. If a $25–$50 product shows you the mechanism does nothing for you, you have not spent $275 or check the maker’s current listing finding that out.
Mammoth Force
Mammoth Ring
Stretch silicone ring. Store lists oval inner size 1.5 in and a 2.5x stretch.
4.6 from 15,000+ reviews
Free shipping over $50 • Discreet packaging • Ships from Huntington Beach, CA
Mammoth Force
Red Tiger
Three silicone rings. The store does not publish inner diameters.
4.6 from 15,000+ reviews
Free shipping over $50 • Discreet packaging • Ships from Huntington Beach, CA
Safety
The Mammoth, Dragon and Red Tiger product pages say thirty minutes maximum and never while sleeping. Remove at once on numbness, pain, coldness or a dark colour change.
What to read next
- Sizing if this is a ring
- stretch rings we sell
- In-house ring comparison if you already picked this shop