Dorai Stone Bath Mat Review, Tested and Reviewed (2026)

This story was updated at 9:21 EST on 10/07/25 to reflect Amazon Prime Day pricing.As a shopping writer, my friends are very curious to know which recs I mean—no, really mean—among my many rounds of testing everything under the sun. Without fail, I recommend this bath mat made from diatomaceous stone, a word I've learned to say without stuttering since I talk about it so often. So when Prime Day returned, I waited with bated breath for this deal in particular, and Amazon delivered. The Dorai is $24 off right now, which brings the last bath mat you will ever need down to $66.Dorai Bath Stone MatMy impression of bath mats was that there was little to nothing to do about mildew, puddles of water, and discoloration. A bath mat was one of those things in the home that was, and would always be, gross—much like a sponge, or a shower curtain. Everything was chenille, as if that's what I wanted to step on with wet feet—super-shedding, moisture-trapping fabric.When Dorai (the Japanese rendering of "dry") pitched me their diatomaceous earth bath mat in 2025, my instinct told me this was some As Seen On TV gimmick. But this research-backed bath mat caught my attention. Diatomaceous earth is a naturally occurring mineral (diatomite) made from the fossilized remains of diatoms, hard-shelled microalgae with silica-rich skeletons. It's essentially super compressed minerals that, when compacted, feel like stone. It's incredibly porous, causing moisture to evaporate rapidly, and holds up to 150% of its weight in water. The brand also claims it's quick-drying and hygienic, so I put it down in my bathroom and waited dubiously for results.The SpecsThe verdictThe SpecsThis bath mat is the size of about any other—23.6" x 15.6". It's made of the aforementioned diatomaceous earth, which looks and feels like natural stone or a ceramic-like material, only it adapts to the temperature of the room so you can avoid chilling your toes when stepping out of a hot shower. The natural, non-toxic and durable material is also bacteria- and odor-preventing, and dries so quickly that it stops the molding process in its tracks. It's also blessedly anti-slip, with four rubber corner pads for traction and an accompanying non-slip mat for good measure. Even without those, the grooves in the surface keep it from getting slick underfoot.As for the design, it comes in a few minimal patterns, continuous stripes, broken stripes, and swirls, all of which feel like a clean slate next to the usual squares of colored fabric. Part of its appeal is its camouflage. The first bathroom I used this in wasn’t modern at all—it was sort of twee—and still the Dorai bath stone looked perfectly suited to its environment. My next one was a bit more contemporary and less cutesy, and it looked even more at home.I’ve had this bath mat for a little over a year and a half, and it wasn’t until the one-year mark that it needed a clean. Along with the rubberized bottom pad, Dorai has included sandpaper for scrubbing stains or dirt off your bath mat. A one-minute scrub takes care of any residue.The VerdictThe Dorai bath stone in Harrison's aforementioned “twee” bathroom. Julia HarrisonI first wrote about the Dorai last year because I couldn't stop bringing it up, and that hasn't changed. It—and I mean this as casually as possible—changed my perception of what's possible for a bathroom mat. It is so fast-drying that water disappears within about six minutes of landing on the bath mat. This product does everything it promises: prevents mold, shows exceptional absorbency, presents an unmatched functionality in bathroom accessories, and looks good to boot.The cherry on top is that the Dorai Home is also eco-friendly, sustainably made, and the company is female-founded. If you've been waiting for an excuse to retire the damp rug in front of your shower, this Prime Day markdown is worth shopping now. I've even extended my fanaticism for these miracle silica-skeleton products: I now own their stone sink caddy, as well as their dish drying mat. Find mold in my home, I dare you.