The Double Trolley is sold out

Thank you all bass players around the world for your entuthiasm and appreciation of the Double Trolley over the years!

I'm now pursuing new projects that will be even more exciting!

Marc Grue
Inventor of the Double Trolley

Double Trolley stool

Click to see the Double Trolley transform:


Trolley to Stool
in 5 seconds

Stool to Trolley
in 7 seconds


Rolling The Double Trolley is the unique solution for any double bass player who wants a safe transport system for the double bass, and a high quality adjustable stool upholstered with genuine leather - all in one! Playing
Trolley Trolley to stool Stool
In under 10 seconds you can transform the Double Trolley into a high quality stool and vice versa.

How it works
The stool
The trolley
Stool to trolley

4 early users of the Double Trolley in Copenhagen, Denmark.
Ditlev Damkjær (second from left) was the first to buy a Double Trolley back in 1999 - Double Trolley no.1! Katja Nielsen, Pernille Rømer, and Magdalena Entell were soon to follow. Now, bassists from more than 20 countries are currently enjoying the convenience and comfort of the Double Trolley. Here are some testimonials...

"The Double Trolley is an ingenius initiative. At once it solves the two major problems for all bass players: It eases transportation and at the same time delivers the best bass stool I have ever sat on."
Niels-Henning Ørsted Pedersen
- Double bass Jazz Legend (1946-2005)


I got the Double Trolley and it works very well! It is built more firmly and so easier to move the instrument and to sit on than I thought. Among all, I'm surprised at that it can make sharp turns so I can move the instrument in narrow space like a corridor in my home. All of my colleagues admired it, and some of them said they would like to buy it.

Today, when I took this picture, there was a slight strong earthquake, but my instrument which was standing with the trolley didn't fall down!

Yosuke Yamazoe

More reviews..
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