A museum in Austria has put on display a condom made from pig intestine. The Tirolean County Museum said it is the oldest surviving condom in the world.

Museum curators said the reusable condom dates back to 1640. It is complete with the original users manual that is written in Latin.

In the manual, users are advised to soak the condom in warm milk before using to avoid contracting any diseases.

The museum said they found the condom in Lund, Sweden and is one of the 250 ancient items related to sex on display this summer.