64mm nominal width in girth

1. What “64 mm nominal width” actually means

Condom makers define nominal width as the flat width of an unrolled condom; you measure it when the condom is laid flat and multiply by two to estimate the internal circumference the product is designed to cover ^{[3] [4]}. Brands sell 64 mm nominal width as one of their widest girth options — My.ONE offers a “64” girth number and My.Size openly labels products “64” meaning 64 mm nominal width ^{[3] [1]}.

2. Who 64 mm is intended for — manufacturer guidance

My.Size markets 64 mm products as best for erect girths of about 13–14 cm (130–140 mm) and describes them as “somewhat wider” to avoid pinching ^{[1] [2]}. My.ONE and ONE® cite 64 mm as their largest “Super Wide” girth number, part of a lineup that spans from 45 mm up to 64 mm ^{[3] [6]}. Retailers and size guides group 64 mm into “extra large” or “XXL” categories that can fit up to roughly 165 mm girth depending on the source ^{[5] [7]}.

3. The math and why users report different fit experiences

A commonly used heuristic is nominal width × 2 ≈ condom circumference; by that estimate a 64 mm condom has an unstrained internal circumference of about 128 mm, which explains why someone with a 152 mm erect circumference reported the 64 mm feeling tight and being advised to try 69 mm instead ^{[3] [8]}. Different brands use different rubber elasticity, taper, and tested stretch — so a 64 mm My.Size may feel different from a 64 mm MyONE or a Durex XXL, and brand fit charts sometimes recommend sizes at different thresholds ^{[8] [1] [3]}.

4. Conflicting guidance across sites and brands

Users report mixed advice: a condom‑size calculator recommended 60 mm for a 152 mm girth while the My.Size site placed that person near the 69 mm limit, and the user found 64 mm “a bit tight” but wearable — illustrating that tools and brand recommendations don’t always align ^[8]. Independent guides and vendor charts also differ: some say 64 mm is suitable for girths starting around 5.5–6 inches (~140–152 mm) while others classify 64–72 mm as extra large fitting up to 165 mm ^{[9] [5]}.

5. Practical advice from the reporting

Because brands, materials and shapes vary, the only reliable way to know whether 64 mm nominal width works for you is to test different brands and sizes; many vendors sell single sizes or sample packs ^{[1] [3]}. If a 64 mm feels tight at rest for a measured girth of ~152 mm, the reporting suggests trying one size up (e.g., 69 mm) or a brand with a slightly roomier cut — users and vendor pages report that moving to the next nominal width often solves tightness without excessive slippage ^{[8] [7]}.

6. How to interpret size charts and avoid errors

Read brand‑specific guidance: My.Size explicitly lists which girths their 64 mm is “best suited” for ^[1], while My.ONE and ONE® present 64 as their widest girth number ^{[3] [6]}. Size calculators and general charts can give different thresholds; use them as starting points, not absolute rules, and pay attention to whether a chart describes nominal width, doubled width, or directly maps to circumference ^{[4] [10]}.

7. Limitations and unanswered details in current reporting

Available sources do not provide standardized laboratory stretch‑to‑failure data to convert nominal width into a guaranteed fit range across brands, nor do they offer a single universal formula that accounts for material elasticity differences — reporting is brand‑specific and sometimes contradictory (not found in current reporting). Where brands explicitly disagree with calculators or each other, the publications above document those differences ^{[8] [3] [1]}.

Bottom line: 64 mm nominal width is a widely sold “extra‑large/super wide” size intended for above‑average girths, but brand specifics and material behavior matter — try a nearby size or different brand if 64 mm feels tight, and use brand charts as your operational guide ^{[1] [3] [8]}.