Japanese condom sizes (Different measurement methods)

1. "Width" in UK and the US

– This refers to the width of the two ends of the condom when it's "squeezed" (= semicircumference).

1. "Diameter" in Japan

– This refers to the "diameter" of the condom.

The following formula holds true: Japanese "diameter" x 1.57 = UK and US "width."

1. Zero Zero Three 003 Real Fit 10-pack (Condoms)

Japan '32mm' (diameter) = US and UK 50mm (width)

1. Zero Zero Three 003 Large Size 10-pack (Condoms) Super Big Boy 12-pack (Condoms)

Japan '37mm' (diameter) = US and UK 58mm (width)

1. Sagami Original 002 Large Size 12-pack (Condoms)

Japan '38mm' (diameter) = US and UK 59.5mm (width)

1. Mega Big Boy 12 pieces (condoms)

Japan '46mm' (diameter) = US and UK 72mm (width)

Don't confuse width(girth) with diameter! Japanese people aren't small! Haha