I can't answer that question because I have an EWI and it works great for that

I use it for the EWI 4000S. Lots of compartments and rugged case protects the EWI.

I purchased this case for my EWI 4000s and to my surprise my EWI fit like the Protec was made for it

Holds the EWI great though was a little more bulky and heavy than I expected.

Place the two small pads on both sides of the EWI mouthpiece and the EWI is secure enough