These replacement toothbrush heads that are compatible with the sonicare toothbrush is amazing! They are exactly what my family and I have been looking for and needing. When you buy the sonicare toothbrush it is very expensive. Their replacement heads are $20 plus. Trying to find a replacement brush head that is comparable to the original is very hard to come by. These replacements are so soft and comfortable when brushing like the same brand and at half the price it's a steal. They fit perfectly on the sonicare tooth brush without worry of any damage to it And the colors are vibrant it helps tell who's toothbrush is who's. Overall great buy and I highly recommend.