Mammoth Ring costs $39.99. FirmTech TechRing costs $275. Both sit in the stretch ring aisle. The useful question is which constraint you will live with, not which homepage is louder.
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
| Mammoth Ring | FirmTech TechRing | |
|---|---|---|
| Listed price | $39.99 | $275 |
| Material | silicone (store listing) | adjustable band plus electronics |
| Sizing | 1.5 in oval inner, 2.5x stretch, girth 4.5 to 7.75 in (store listing) | adjustable |
| Medical-device listing | no | maker says yes |
| HSA/FSA (maker’s claim) | not claimed | claimed |
| Vibration | no | no |
| Anaesthetic | no | no |
| Best for | a single stretch ring in the store’s 4.5 to 7.75 in girth band | men who want a log for a urologist, not just a tighter erection |
| Not for | buyers who want published millimetre sizes for a three-ring set, or a vibrating ring (this shop does not sell one) | anyone who just needs to stay hard tonight |
Prices for other brands are approximate and move. Ours are the store listing.
Price
Mammoth Ring is the cheaper of the two as listed. listed on the Mammoth Force store. Confirm the other at source before you treat this as a quote.
How they actually work
Mammoth Ring: a stretch ring. This site does not make disease-treatment claims for it FirmTech TechRing: constriction plus tracking. The ring still does not create inflow.
Sizing
Mammoth Ring sizing: 1.5 in oval inner, 2.5x stretch, girth 4.5 to 7.75 in (store listing). FirmTech TechRing: adjustable.
Regulatory sticker
FirmTech TechRing is sold as a medical device. The other is not. Buy the listing if you need a receipt. Buy the simpler ring if you need to know whether a stretch silicone ring is even your problem.
Who should buy Mammoth Ring
a single stretch ring in the store’s 4.5 to 7.75 in girth band. Strengths the maker can honestly claim: store-published girth band; silicone; no battery. Limits: figures are store copy, not a lab measurement; no published inner-diameter drawing.
Who should buy FirmTech TechRing
men who want a log for a urologist, not just a tighter erection. Strengths: 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.
When to buy the Mammoth Force one
Mammoth Ring is ours. FirmTech TechRing is not. Ours wins on price and on not needing an account. Theirs wins where the table says it wins: data if you want it; adjustable.

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
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
