i love the way it works on my teeth but does not [SEP] on the fence about these originally bought for my toddlers but i did not pay attention to the dimensions since my search was toddler toothbrush so i just assumed they would be small enough for them nope they are adult size no biggie just thought i would use them myself i love the way it works on my teeth but does not clean gums or tongue plus the head is kinda hard with the two sides close together obviously but i envision bacteria and other stuff getting stuck in between i do not think rinsing would get it completely clean so i like but do not like