Let me start by saying, this little cube is ADORABLE. At just 1.25" wide, it fits perfectly in small hands (or adult palms for that matter). The super solid squish factor is real - it's firm enough to satisfy that sensory craving but still delightfully squeezable.
The texture reminds me of those perfect stress balls that aren't too hard or too soft. I've been keeping mine in my work bag and pulling it out during meetings - it's subtle enough not to distract others but gives my hands something to do. The squish-and-rebound action is oddly therapeutic.
Now for the downsides: The size might disappoint some people expecting something bigger (check those dimensions carefully!). Also, while mine has held up well so far, I've heard reports of leaks after heavy use. Mine did pick up some lint in my bag, but a quick rinse fixed that easily.
Color-wise, I got the purple one which looks exactly like the photos - vibrant and fun. While $10 might seem steep for something so small, considering how much use I've gotten out of it already (and how many coworkers have asked where they can get one), I'd say it's worth it for the quality sensory experience.
Pro tip: This makes an amazing stocking stuffer or small gift for anyone who needs discreet fidget options. Teachers, therapists, and parents will appreciate how durable and easy-to-clean these are compared to other sensory toys.