Fast response and very understandable and helpful. Be careful when installing. It just seemed like the best deal and now that Ive received it Im even more sure of it. That worked great. These make him happy because his "sippas" match Mamas. While it is flexible to some degree it is plastic with all the limitations of that. Is a little bit of a reach for me(510") to put my on my kayaks on my SUV. It takes a while to get the belt just right the first time, but after you hone it in, it?s wonderful. Although I have a few other BT headphones, these are the ones I use everyday for short periods (e. I highly recommend.