If you play the violin or viola you know that Kun is a great shoulder rest and you can't go wrong

While it was perfect for 1/8 and I recommend Kun rests wholeheartedly (I've used one on a 4/4 for years), I was disappointed that when he transitioned to a 1/4 size violin, (and I adjusted the rest to maximum width), it was still too small

My daughter is tiny for her age, and the staff where she rents recommended this adjustable size shoulder rest

Kun is still the best shoulder rest

before she complained that the cheap rest that came with her violin was uncomfortable.