In the words of Dunlop:

The 105Q Cry Baby Bass Wah has been the most popular bass wah for years. The worlds top bass players have used its deep, expressive tones to
add groove and texture to their bass lines. Now you can get that sound
and functionality without taking up much more space than a Phase 90.

Enter the Cry Baby Mini Bass Wah. Its half the size of the 105Q, and
unlike its bigger brother, it comes in a lightweight aluminum housing.
The Mini Bass Wah may be small, but its thunderous presence will not to
be denied. This pedal has been carefully designed to retain and
complement your low end, with Volume and Q controls to further fine-tune
your wah sound. Players of downtuned and extended range guitars, take
notethis little beast will sound great with your rig, too.

Stepping in and out of the wah effect to sweeten up fills and solos is
simple and seamless thanks to convenient auto-return switching, and with
such a small footprint, the Cry Baby Mini Bass Wah will fit nicely on
your downsized travel board.