I bought 5 different packing cubes. I kept these. If I could change anything the only thing I would change would be to have 1 additional compression zipper that compressed half as much. You're not going to find that on anything else either, so 5 stars still.
I have used the M, S and shoe cubes recently on a week long trip. I was able to fit all the cloths I needed and still had room. The packing cube construction seems durable and made of quality materials. I really like the way the cube combos nest in my pd travel bag perfectly!
I travel for work and have to take 5 days of bulky work clothes. This cube swallows my closes with room to spare. I purchased the small cube for person items and haven’t needed it.
I've used my fair share of packing cubes. The one by PD in my opinion are the best. Made from incredibly durable materials with functional design. I know they aren't the lightest cubes out there, but you're talking such a negligible amount for much better durability. I love just packing them to the brim, zipping it down and then pushing against it to spread the contents out to fill the square. Oddly satisfying haha.
They definitely win the price for best feeling fabric in a packing cube! I got both sizes, the "Small" easily fits 10 t-shirts (Women's S) or 3-4 pairs of trousers and leggings; the Medium is huge and currently holds all of my pullovers (one thick fleece, one woollen and three thin cotton ones) with room to spare. I hope they'll hold up, because I don't ever want to use anything else. Also, a smaller size (for underwear etc.) would be awesome.
Extra points for excellent support - the first cube I received was defective, but they were super nice about it and immediately replaced it.