Quick answer

Choose MyONE Size 45E if you need the snuggest fit available to prevent slippage; choose Size 49E if you want a snug but slightly roomier custom fit.

Width is the key difference

The main distinction between MyONE Size 45E and 49E is the nominal width. Size 45E has a 45mm width, making it the snuggest option for those who need a very narrow condom. Size 49E is still snug but offers 4mm more width, which can be more comfortable if you find 45mm too tight.

Both sizes share the same length (5.6 inches, Length Letter E). So your decision comes down entirely to girth preference.

Comfort vs. security trade-off

A narrower condom like 45E reduces slippage risk, but may feel restrictive if your girth is closer to average. Size 49E provides a closer fit than standard condoms while still offering a bit more room for comfort. If you're between sizes, consider which trade-off matters more: maximum security or slightly easier application.

Trade-offs at a glance

  • MyONE Size 45E: Snuggest fit (45mm width) for users who need maximum grip to prevent slippage. Measure your girth carefully; if you're under 4.7 inches circumference, this is likely your size.
  • MyONE Size 49E: Snug but roomier fit (49mm width) for users who want a closer fit than standard but not the tightest option. Good if standard condoms feel loose but 45E feels too constricting.
  • How to choose: Use a measuring tape to find your circumference at the base of the erect penis. Divide by 2 to estimate nominal width. If you measure 4.5–4.7 inches circumference, 45E is ideal; at 4.7–5.1 inches, 49E is a better match. When in doubt, order a sample of both sizes to confirm comfort before buying a full box.

Product facts

  • MyONE® Size 45E My Custom Fit® Condom: MyONE Size 45E has a 45mm nominal width and 5.6-inch length, the snuggest custom fit available. If standard condoms slip off, this size provides the tightest grip for peace of mind.

    MyONE® Size 45E My Custom Fit® Condom

    MyONE® Size 45E My Custom Fit® Condom

  • MyONE® Size 49E My Custom Fit® Condom: MyONE Size 49E has a 49mm nominal width and 5.6-inch length, offering a snug but not ultra-tight fit. It bridges the gap between narrow and regular condoms, suiting users who want a tailored fit without extreme snugness.

    MyONE® Size 49E My Custom Fit® Condom

    MyONE® Size 49E My Custom Fit® Condom

Which one should you pick?

Best for

  • Users who need the narrowest custom fit to avoid slippage (Size 45E)
  • Users who want a snug fit but find 45mm too tight (Size 49E)

Not for

  • Users with average or larger girth who need a regular or wide condom