Speedball Canvas Storage Case. Available in many sizes.
Great quality and come in a variety of colors and sizes. I have a number of them and love them.
I have one like that (or at least one very similar to it) that I got from hobby lobby a few years ago. If you search 24 or 48 pencil case you can find a few that are pretty similar I am pretty sure this is the one I have
Just curious, does that happen to be a screenshot of a Jazza video? That design in the corner looks really familiar
Edit: I just noticed the tag, I'm pretty sure that one specifically is the global art version link
What about the Global Art Pencil Cases?
The "48 Pencil Case" has 3 slots for pens in 2 compartments for a total of 6 pens. Padded, with no pens touching each other:
https://www.amazon.com/Global-Art-Pencil-Case-Steel/dp/B007KAWW04
The "24 Pencil Case" has 3 slots for pens in 1 compartment. Padded, no pens touching each other:
https://www.amazon.com/Global-Art-Canvas-Pencil-Cases/dp/B007KAWVAA
These work well and zipper completely closed.
NOTE: These cases have elastic straps for the pens. Perfect. But avoid the "120 pencil case" because that case's straps are too narrow for fountain pens. The 48/24 cases are perfect in this regard. Actually -- in the 120 case you can unseam every other stitch in the canvas straps and it becomes a usable as a 10 pen case but it's somewhat unwieldy compared to the 24/48. I use my 120 case to hold 5 pens on one side and a Moleskine sketchbook or 5x8 Rhodia pad on the other. It has two compartments. I have a bunch of the 48 & 24 cases - those work out of the box.