If you're looking for a condom of a specific width or length you can pick them from the . Width is measured when the condom is flat and is around 1/2 of the condom .. My size is 5 1/2 inches long by 1 1/4 inches girth and 4 in circumference. The major factors I look for while choosing a condom are, the size, the texture and the thickness The size. More and more people are led by the notion that one size fits all when it comes to condoms. This is Fits Girth: 4 Inches - 5 Inches.