SPONGE: Dry, DB's is a bit bigger and rounder and a good 1/3-1/2 denser than Beauty Blender. Much closer in size when wet but still a big density differential and DB's holds a lot more water which is usual for a denser sponge, you need to thoroughly towel dry that else it will re-lift thinner foundations.

USE CASE: I prefer my BB over DB's for liquid foundation any day but I'm spoilt. This does a decent job though. Good for travel/keeping it clean for a decent price. The surprise win here was damp powder foundation application. Not something I do 'cos my sponges are too soft/porous. This is so smooth when damp (but not too wet) that I got Rimmel Stay Matte Translucent to look airbrushed medium-to-full coverage. LOL!

CLEANSING: Mat is similar, just bigger and more gentle which is good 'cos BB's rips my sponges. UPDATE: GET THE SOAP. GET IT NOW. NOW. I'm literally buying another just for that soap. Couldn't get Huda or powder out w/my Eco Tools, this got it out of DB sponge even without the mat in a flash. If you look at my earlier pictures you'll see dark stains on the bottom right and top left of my Beauty Blender (oh it's worse on the back, trust me)...GONE. Gone, even without the mat, just fingers. Old ELDW and Dior stains are gone that BB's soap couldn't clean. Thrilled.