Nice and compact so it can fit in almost any purse or clutch bag. The aerosol which is under pressure "screeches" when activated. If you use this and carry mace/pepper spray, make certain that in time of need, you won't mistake one for the other.

I've never really used this for protection from an attack; however we have purchased these for our family for hiking and camping trips. Each of us carries this with us at all times when we camp or hike so that we can keep in touch in case of an emergency. The canister is small enough to fit nicely in special pockets of my fishing vest as well. The sound is unusual enough not to be confused with every day sounds and loud enough to be heard through the woods at a pretty good distance.