After I had sold myself to the 1500s Porta Puzzle (way too big and not strong enough), I've been using the Porta Puzzle Deluxe found here something suitable. The wallet is even of their dimensions not just small, but very stable. This is exacerbated because it will be offset by the zipper in the situation, the sides fold back to back.
One reviewer said - as it is also right - that a complete separation would have been optimal, so that the underlying puzzle material, the back to back is naturally exposed at the location, not dirty so fast / damaged. But I'm very careful with the wallet, and I puzzle preferably, in which it lies on my lap. This is very good, especially the portfolio is very stable due to their "situation" back to back, since nothing will deflect.
Next I find it very positive that there are no firmly connected side shelves that would the whole m. E. make uncomfortable. Instead, there are also here removable panels, which I find very convenient if you want to accommodate many puzzle pieces.
What I however can not confirm is that the puzzle pieces would not slip when you set upright the wallet. I have the edge and some more parts ready, which remains in place, but loosely applied to the finished size parts slipping a bit. But that is not bad and I rate the non-negative, because I do not edgewise place the wallet after work, but put under the living room couch. Because it fits out wonderfully.
Nor is it true that the Porta Puzzle Deluxe 1000 is too small or too tight for 1,000 parts. I can only imagine that the relevant reviewers puzzles with 1,000 parts had to have exceeded "normal" size, the. My current puzzle "Safe Haven" fits perfectly, I have on all 4 sides still enough space. Right and left about 3 cm, top and bottom 1-2 cm. There is nothing to complain about.