Natural latex, nipple-ended and silicone lubricatedEXS Endurance Delay condoms are 53mm straight-walled condoms made from natural latex. Each condom is lubricated on the outside (although additional lube may be required) and has a 1% lidocaine desensitising lube inside to be massaged into the head of the penis. EXS Endurance Delay condoms increase the duration of intercourse!