I have use this brush 3 year in a row -lrb- replace every 3 mo or so -rrb- , for both my kid -lrb- bear 18 mo apart -rrb- . this be the best brush . sure , it do not hold up for more than 3 mo or so , but no sponge do ! it be lightweight , clean my medelum baby bottle well , and easy to travel with , too . highly recommend .