These mutes are very cool! Soft neoprene wet-suit material with interchangeable foam sound suppressant inside. It is very light weight. I keep one in my case all the time. It can fit over your horn in a gig bag and offer even more protection. You can stuff it in your case or pocket and it won’t dent! It could be used as a practice mute or even in very soft recording or jazz performance situations. It sounds like a blend between a bucket and a tight cup.
It’ a GREAT mute!!!!