Mean reported length change
+0.95in
4 accounts · Small sample · Median +1.00 in
Each dot is one account · Select to read reports
Traction device · Results & reports
Compare device optionsSizeGenetics
A traction device offered in several packages.
Reports cover a device family and may not identify the model. Mixed routines remain mixed; the figures do not isolate a product effect.
What people reported
SizeGenetics community results
SizeGenetics family · Model versions may differ
Mean reported girth change
+0.38in
2 accounts · Small sample · Median +0.38 in
Each dot is one account · Select to read reports
Self-reported success posts · Mixed routines included · Not a forecast
How to read these numbers
Each figure uses one selected change per account and dimension. The archive contains gains/success posts; it cannot estimate typical buyer outcomes or success rates. Reports cover the device family, not a verified effect of a particular model. Length and girth may come from different accounts and periods.
Every usable sample is shown. One account is an individual change; two to four is a small sample. Five does not establish reliability. Missing measurements are not zero gain. Method and device groups overlap.
Length range: 0.80 in to 1.00 in.Girth range: 0.25 in to 0.50 in.Full methodology
Filter by recorded routine
Routine labels describe what the author recorded. Sole-use reports are still self-reports and do not establish causation. Missing routine details remain unknown.
Inspect reports, timing & strict measurements
SizeGenetics · All recorded routines
How long did these accounts report?
No usable elapsed duration is recorded for this measurement. Individual wording remains available in each report.
| Report | Change (in) | Period | Routine context |
|---|---|---|---|
| Report 351 | +0.80 | 11 months | Mixed routineMethods & devicesExtending · Hanging · PumpingPeniMaster, SizeGenetics |
| Report 443 | +1.00 | about 1400loggedhours, minimum 40h/week; calendar durationunknown | Other methods not specifiedMethods & devicesExtendingSizeGenetics |
| Report 469 | +1.00 ≈ | over a year | Other methods not specifiedMethods & devicesExtendingSizeGenetics |
| Report 228 | +1.00 ≈ | about a year | Mixed routineMethods & devicesCock ring · Extending · Manual stretching · PumpingBathmate, SizeGenetics |
Strict measurement subset
Named measurement conventions and routine groups remain separate.
No strict groups are available.
SizeGenetics at a glance
- Traction device
- Several packages
- Accessory differences
Keep in mind: Package price and included extras do not establish greater reported gains.
Behind the numbers
Individual reports
SizeGenetics family · Model versions may differ · All recorded routines
All 4 selected accounts. Examples show the spread, not the likelihood of an outcome.
Report 351 · LengthMixed routine
+0.80 inReported length change
Reported period: 11 months
Measurement method not stated
Recorded endpoints · shared scale
BeforeNot recorded
AfterNot recorded
Reported methods
Extending · Hanging · Pumping
Devices mentioned: PeniMaster, SizeGenetics.
Routine & supporting excerpts
Recorded techniques: ModifiedPenimasterProspringsupto6lb;SizeGenetics earlier · PenimasterPro≤4.5lb · Doseunspecified concurrent.
Period & routine context: Full reported interval exposure; no isolated component effect
The author’s words, as recorded in our source material. Routine notes may describe a different part of their history; they do not establish what caused the change.
I've gained 0.8" in 11 months of work - tons of people have gained 1.5 - 2 inches over the course of several years.
All of my length gains have been from extending/hanging. I do pump as well though.
I fucked up massively and bought the Size Genetics and then the PenimasterPro - huge waste of money. I've managed to make it work pretty well tho by modding the PenimasterPro with higher tension springs (up to 6lbs). If I could start over, I'd go straight for an Apex, or BestExtender, or HogStretcher (basically any extender capable of delivering high tension).
The only thing I can suggest is getting an erection before you apply the vacuum cup - your glans will pack the chamber more fully when you're erect and this might reduce slippage as the cup has more to grip onto. I've never hung more than 4.5lbs with the Penimaster though, so I'm not too sure.
Report 469 · LengthOther methods not specified
≈ +1.00 inReported length change
Reported period: over a year
Measurement method not stated
Recorded endpoints · shared scale
BeforeNot recorded
AfterNot recorded
Reported methods
Extending
Devices mentioned: SizeGenetics.
Routine & supporting excerpts
Period & routine context: Full reported interval exposure; no isolated component effect
The author’s words, as recorded in our source material. Routine notes may describe a different part of their history; they do not establish what caused the change.
I’ve been using the size genetics stetcher for over a year now and I’ve gained about an inch I think in length and a little bit girth. I don’t even use the device consistently. Anywhere from 3-6 days a week and 1-2 hours a night.
And I’m going to be ordering the new Apex stretcher. Good luck everyone
Report 228 · LengthMixed routine
≈ +1.00 inReported length change
Reported period: about a year
Measurement method not stated
Recorded endpoints · shared scale
BeforeNot recorded
AfterNot recorded
Reported methods
Cock ring · Extending · Manual stretching · Pumping
Devices mentioned: Bathmate, SizeGenetics.
Routine & supporting excerpts
Recorded techniques: Three five-minute sets with two-minute FireGoat rolls between · Tries8–10hours daily, hourly removal · Hourly while extender removed · Loose around penis and balls after routine.
Period & routine context: Full reported interval exposure; no isolated component effect
The author’s words, as recorded in our source material. Routine notes may describe a different part of their history; they do not establish what caused the change.
I like my SizeGenetics comfort edition but a lot of guys say it is too uncomfortable for them to use. It does take some getting used to. I don’t think I could wear it under clothes but I have seen some guys that do.
Report 443 · LengthOther methods not specified
+1.00 inReported length change
Reported period: about 1400loggedhours, minimum 40h/week; calendar durationunknown
Measurement method not stated
Recorded endpoints · shared scale
Before7.00 in
After8.00 in
Reported methods
Extending
Devices mentioned: SizeGenetics.
Routine & supporting excerpts
- Change described
- 7to8
Period & routine context: Full reported interval exposure; no isolated component effect
Recorded routine details may describe a different period from the reported change. Missing details remain unknown; they do not establish an isolated device effect.
The author’s words, as recorded in our source material. Routine notes may describe a different part of their history; they do not establish what caused the change.
I wore a SizeGenetics and logged ~1400 hours at a minimum of 40 hours a week. For the effort invested, it wouldn’t be my first go-to for added length, as the better quality ones are $$$. At the end of the day, I went from 7” to 8” and 5.5” to 5.75” in girth. I did nothing but ADS, no pumping or stretching or jelquing during or after I stopped using the ADS.
SIZEGENETICS ADS with a Velcro strap for the front piece
Optional context: broader method reports
Method-level evidence · Not SizeGenetics-specific. Other devices and mixed routines are included; these figures cannot fill gaps in device evidence or rank products.
Open the extending evidence pageModels & practical details
What to check
- Confirm the exact model, attachment and included parts.
- Check fit, replacement components and current instructions.
- Confirm regional availability, final price and return terms with the seller.
Product notes checked 2026-10-05. Confirm current pricing, availability and terms with the manufacturer.
Product sources
Sources describe product formats. Manufacturer gain and safety claims are not adopted as community evidence.
Questions about SizeGenetics results
Are these results caused by SizeGenetics?
The archive includes mixed routines and unspecified use. The routine filter can show explicit sole-use reports, but even these do not establish causation. Device-family reports do not rank individual models.
How long will results take?
Each report keeps its own elapsed period. Those periods are not a timetable for you, and averages cannot predict a personal result.
Are the results clinical evidence?
No. These are self-reported changes from gains/success posts, not estimates of typical buyer outcomes, safety or permanence. Read the methodology.
Explore your options
Compare product formats and the reports behind them.