The case fits both boards wonderfully and the straps hold it in place and protect the keys and buttons so that you can stack them without worrying about damage.

I like the internal straps so that stuff doesn't just drop to the bottom when it is tipped upright.

The straps on the inside are great

I can also see how this would adequately hold a keyboard also with the nice securing straps inside (which was a major decision factor for us).

I love the straps on the inside, and the padding is really perfect.

I bought another brand of case that was supposed to be for a 61 key case and did not fit my Casio CTK6000, but it pretty much swims in this one, which makes the velcro straps very important to secure the unit inside the case

It has two big straps on the inside for securing the piano, each with several inches of padding as to further protect the instrument.

I love the padded straps which help to further protect the top of the keyboard.

The straps secure it well so it doesn't shift around

This case fits my Yamaha P-105 like a glove