What is Reddit's opinion of Daler-Rowney Cachet Classic Portfolio, Hard Cover with Cloth Ties, 20 x 26 inches, Black (471302026)?

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It's not the prettiest and doesn't come with individual pages that allow you to flip through your collection but I made a DIY cachet style portfolio by buying sheets of corrugated plastic board which I taped together at one edge and attached some strings for a closure.

Example of the board (buy two small ones in the size you need or cut a bigger sheet in half): https://www.homedepot.com/p/Coroplast-48-in-x-96-in-x-0-157-in-White-Corrugated-Plastic-Sheet-CP4896S/205351385

Style of cachet art portfolio I was copying: https://www.amazon.com/Daler-Rowney-Cachet-Classic-Portfolio-471302026/dp/1561520721

I bought my plastic boards from an art store so no idea if they are higher quality/safer for art than ones from a hardware store. This is probably the cheapest storage option though.