My 3 year old son likes building toys and has great imaginative play with characters..robots, animals, etc. I thought this would be a great set other than the legos he plays with all the time. For some reason, he and his 5 year old sister can play with this bristle set for a few minutes and get tired of it real quick. Maybe I need to get an additional set with more pieces for them to explore.The bristles hold on to one another pretty well but the things they built...castles, cars, etc are not so sturdy or playable as legos.
Overall, a good diversify building set for the imaginative child.