Incredibly poorly designed !!!!

I find the principle of "abdominal wheels" simple and very effective!
I recommend the use to all those who want to work the abs intensely (with some precautions to take, however, to preserve the column).

I had an old model that still works, I found cumbersome. So I ordered this thinking Everlast wheel win at changes ...
The result is more than disappointing:

1- 2 wheels are all fine, the fact that they joined the unit makes VERY unstable! Very difficult in practice! The balance problems do not help to focus on the sensations in the abdomen.
I had to add rings between the 2 wheels to dismiss them and obtain a minimum (still unsatisfactory!) Stability.

2 handles top the list of the stupidest design that is: they are too thin and striated so painful depth after a few minutes of use ... (so uncomfortable!)

Short. I put the wheel at the bottom of my closet after one hour, to stand my old which was clearly better designed!