Not sure what the negative reviews were expecting, but this is a nice size for essential oils (obviously sold separately) and as dimensions are stated in the listing. Side note: the clip on the back is different than pictured, the photo shows a flat, 2 prong clip, this is a 4 prog clip… I will test it shortly to see if it fits.Now, if you’re not used to essential oil diffusers, this will seem small, compared what many are used to getting at B&B works. I prefer this subtle style over gaudy plastic chachkis, that require more refills that contribute to more plastic, unrecycleable waste. The diffuser is made of steel, and feels substantial, the felts that it comes with are nice, I wish I could buy packs of specific colors to keep the colors coordinated with my car, but that’s a market issue, not the seller. But that’s besides the point.This piece is built solid, looks chic and sophisticated, and gently accentuates your interior style. Being able to use essential oils, instead of synthetic fragrances leaves me with fewer headaches, and has less waste. A thorough win in my book.