SOUTH BEND, Ind. -- A woman was sexually assaulted at the Riverwalk Thursday night. If you're a runner or exercise late at night, there are a few tools you can use to protect yourself if you are in danger.



Rick Schram owns Schram's Self Defense Products. He says there are a few inexpensive and lightweight tools people of all ages can use to fight off an attacker.



One tool is the stun gun that looks like a cell phone. It provides the perfect getaway for a runner who gets into trouble.



"You're walking down the road and somebody comes up behind you, all you got to do is hit them and they're going to let go of you," said Schram.



For runners who don't like carrying anything heavy while they're exercising, Schram has other tools, like clip on mace that's packed with a secret ingredient that helps police if they locate a suspect.



"Once you get away you can tell the police officer that it has UV dye in it and they can identify him by the glowing orange or purple," said Schram.



Then there's the bulldog keychain. It's small and light weight and packs a powerful punch if it's used correctly.



You can also use the Kubotan keychain, which can be used to injure an attacker enough you can get away.



"What you're going to do is have this right here in your hand and knock me up in the throat or hit me here, or hit me right up here," said Schram.



In Michigan, you can't own a stun gun unless you have a pistol license.