I recently switched from a collection of LEE 100 x 100 ND filters to a set of Formatt-Hitech Firecrest 150 x 150 ND filters. I used to use a Schneider 5-filter pouch for square 100x100 filters, but I can't seem to find anything on the market that's similar for the 150x150 filters. Everything I've found is for the rectangular 150x170 graduated filters, and I hate having to use the rectangular pouches for the square filters as it's kind of hard to fish them out of the larger pouches.
Anybody else shooting the square 150x150s and have any storage pouch recommendations for multiple filters?