The right condom size is often associated with pleasure alone during sex. But there are also medical reasons that we should take into account before using any size. If the condom is too wide it might come off during intercourse, while if it is too tight it could break. A short condom not completely covering the male member could lead to exchanging bodily fluids during sex. The correct size gives the couple peace of mind and actually increases pleasure. Experimenting with various brands and openly talking to your doctor is something recommended. Here is a comprehensive chart with many brands on the correct size: