If you are choosing between Mammoth Ring and Oxballs Atomic SkinFlex, the split is not branding. Mammoth Ring ($39.99) is a single stretch ring in the store’s 4.5 to 7.75 in girth band. Oxballs Atomic SkinFlex (check the maker’s current listing) is men between sizes, or first-timers scared of a tight ring.
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 | Oxballs Atomic SkinFlex | |
|---|---|---|
| Listed price | $39.99 | check the maker’s current listing |
| Material | silicone (store listing) | SkinFlex (very high stretch) |
| Sizing | 1.5 in oval inner, 2.5x stretch, girth 4.5 to 7.75 in (store listing) | one highly stretchy size |
| Medical-device listing | no | no |
| HSA/FSA (maker’s claim) | not claimed | not 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 between sizes, or first-timers scared of a tight ring |
| Not for | buyers who want published millimetre sizes for a three-ring set, or a vibrating ring (this shop does not sell one) | men who already know they need firm tension |
Prices for other brands are approximate and move. Ours are the store listing.
Price
Oxballs Atomic SkinFlex is the cheaper of the two as listed. often ~$10; confirm at source. 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 Oxballs Atomic SkinFlex: light-to-moderate constriction; the stretch is the point
Sizing
Mammoth Ring sizing: 1.5 in oval inner, 2.5x stretch, girth 4.5 to 7.75 in (store listing). Oxballs Atomic SkinFlex: one highly stretchy size.
Regulatory sticker
Neither is a registered medical device. Material, fit and the thirty-minute rule matter more than a marketplace badge.
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 Oxballs Atomic SkinFlex
men between sizes, or first-timers scared of a tight ring. Strengths: hard to buy the wrong size; soft. Limits: may be too stretchy to hold a serious venous leak; toy brand.
When to buy the Mammoth Force one
Mammoth Ring is ours. Oxballs Atomic SkinFlex is not. Ours wins on price and on not needing an account. Theirs wins where the table says it wins: hard to buy the wrong size; soft.
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