I used to use a Dana RS pump and carried it in this case for years.
As the follow up pump is a Dana i, but the Dana i is slightly bigger and has a sticking out display, so I designed a new case from scratch for the Dana i.
The first (white) version was printed with a TPU 95A. This also is the material I used for the old case. It did a good job for me for 4 years.

In the mean time I have a black TPU 82A and I prefer the softness of this material, so I'll use the black, soft one.