The nubs on the bottom are more reminiscent of Legos than fingertips.
The bumps on the bottom and rollers are too sharp for me - they are irritating rather than massaging. The bubbles are noisy, too - a high-pitched drone that erases all the good of the bubbles themselves. It does feel nice, but it's inspired me to return this model and buy a better (quieter and nubby-er instead of pokey) brand.
Rating: 2 stars