I was wondering when they were going to actually make a toothbrush that works and doesn't proceed your gums or cause abrasions on your teeth like regular toothbrushes. I bought a box of oil pulling mouthwash and was surprised to find a toothbrush inside. I never seen a toothbrush like this and after using it once I realized it was a hidden gem and I could not believe I finally found a toothbrush without even looking for it that does its job like no other I've ever seen. My teeth felt completely smooth and clean, even in between the teeth. I'm so glad to see that they sell replacements. I will be stocking up in case like other things I bought they discontinue them after finally finding the best toothbrush on the market possibly. Don't buy them because I don't want them to run out, LOL