Condoms aren't one-size-fits-all. Make sure you get the right fit. Check the expiration date (it's printed on every individual condom wrapper). Make sure the condom isn't dried out or worn.
A condom's size can affect how well it works. You want a snug fit, like a “second skin”. But if the condom is too small, it may be more likely to break. If it's too large, this can lead to slippage.
Tearing and breaking is often a sign that the condom was too small. If the condom slipped off during sex, it's probably too big.
Condoms may rip during use if they don't fit properly or if they are not put on correctly (such as not leaving enough room at the tip of the condom).
Average Male Size – The BIG Size Myth
These types of studies have contributed to the big size myth in current society. More accurate clinical studies show average excited male length is 5.1-5.5 inches (12.95-13.97 cm).
The required size of the penis to penetrate enough to impregnate is about 4 inches in the erect form.
The researchers found out that during casual sex, size mattered more to women. For hookups, women preferred something larger i.e. around 6.4 inches and when it came to long-term relationships, they were okay with 6.3 inches with a girth of 4.8 inches.
Plastic condoms break more often than latex; using a water- or silicone-based lubricant can help prevent breakage. Condoms made from synthetic rubber (such as polyisoprene condoms) protect against both pregnancy and STIs.
Flaccid stretched penis length: 13.24 cm (5.21 in) Erect penis length: 13.12 cm (5.17 in) Flaccid penis girth: 9.31 cm (3.67 in) Erect penis girth: 11.66 cm (4.59 in)
Based on these studies, the average length of an erect penis is between 5.1 and 5.5 inches (12.95-13.97 cm), but after taking volunteer bias into account, it is probably toward the lower end of this range. Studies show that a majority of men wish they were larger, with some choosing penile lengthening surgery.