i have mixed feelings about this strap. either i'm doing something wrong but when i strap it over shoulder and strap second strap over upper horn, i get horrible playing position, and my right hand feels cramped.
BUT, when i just use one strap (remove the strap for second sholder), it's good! it's great in fact! so i don't even need the second strap. if i knew that i'd buy the single version. and i'm using benton JB75 vintage jazz that is hands down heaviest instrument i've put on my shoulder in the last 16+ years of playing, beats even 6string monsters i had.
again, this strap (just one) made it managable to play benton standing. just wow! it distributes weigth over sholder and back, so it's much more comfrortable then other straps i tried.
good buy!