In a bid to make it easier to wear condoms, a US company has developed a range for all sizes of men.

The makers of the TheyFit range of condoms claim they ensure that they don't slide off during sex, by being more of a snug fit than traditional models.

"While it may not be the size of the wave that floats your boat, when it comes to choosing a condom, size does matter," Condomania said in a press release this week.

It quotes Australian research, which suggests that the success of condoms often depends on the penis circumference, and that if the condom doesn't fit, it can split, break, or slide off.

To combat this, the company's website offers a measuring device for men to make sure they get the right fit for them.

Recent surveys suggest that the length of an erect penis can range from 4 to 9 inches, with widths stretching between 1 and 2 inches.

The range of condoms offered by the company are organised by letters rather than traditional small, large of average, in a bid to reduce embarrassment among men.