Latex condoms are regulated in the United States and must meet FDA standards. Standards are currently being developed. There are no pores or holes in polyurethane. Laboratory testing has shown that particles, even ones as small as sperm and viruses like HIV, cannot pass through this polyurethane material. However, the manufacturer has not completed the clinical trials necessary to prove protection against pregnancy, HIV, and other STD's.
Studies are now underway.
Theoretically yes, but it would be rare. A person should consult their physician if they notice any abnormal change in their genitals. A person should consult their physician if they notice any abnormal change in their genitals. The polyurethane condom fits similar to the latex condom. Water or oil-based lubricants can be used with polyurethane condoms.