Amazon calculates a product’s star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases.
Used these packing cubes over Christmas and they worked perfectly to organise my clothes. If you are wanting to use the compression feature then I would suggest not filling the cube to capacity as they become difficult to zip up. I had a big bag and mainly used the cubes for organisation. I could fit all my jeans and shorts in the larger bag, and t-shirts and shirts in the smaller bag.
Quality - Looks good so far. Doesn't seem like it will break. Convenience - Packing cubes are a must for travel Compression - Seems like a gimmick. The edges zip up but the height of the cube itself stays the same. Compression looks like it's limited to the outer 10% of the cube. A nice to have but that brings me to the next point. Value - I got these for the equivalent of $30 off and even at this price I feel they are only just passable for what they do over a standard packing cube. May as well go the cheaper tried and true method.