HOOAH!!!
These work really well.  Although it takes a little practice as the horn part is flexible.  Just don't get frustrated if you don't get the hang of it right off the bat.  I actually put them away and used my old one but then gave it another shot and with patience, I got the hang of it.  I have a long solid metal one which works great.  I wanted these to keep in my work bag and my gym bag as well as one for my traveling tote since they telescope to a very nice length but also get nice and compact for travel and storage in a bag.  The horn part flexing was perplexing at first but now it's easier to use than my solid one.
Rating: 5 stars