According to a new report, men with short or relatively large penises are more likely to have negative attitudes toward condom fit and feel, reports.

About 1,661 men were recruited from adult web sites selected based on their geographic diversity and disproportionate prevalence of sexually transmitted infections (STIs), including HIV. Data were collected on condom fit and feel through self-reporting by the men, who took measurements of their genitals.

The men were then categorized by size (short, medium and large). Men belonging to the “larger” group described condoms as too short, not rolling down enough and feeling too tight along the penile shaft. The opposite was true for men in the “shorter” group, who reported unrolled latex at the base of the penis.

The study, conducted by the Centre for Sexual Health Promotion at Indiana University in Bloomington, offers insight into the challenges of preventing STIs. Investigators called for condom manufacturers to expand the variety of sizes, and they conclude the data may help sexual health workers better discuss condom use with men.