Works great! My 1.5 year old son loves being in it, and he fits well (And i have pretty big babies). The only annoying thing is its hard to get adjusted to where the weight feels correctly distributed (though that's probably the case with all of these types of back packs), and also when the sheild thing is up, my head kind bumps into it with every step. But that may be because of how i adjusted everything, I'm not sure.Overall very high quality material and very effective! Wouldn't be able to carry around a 1.5 year old any other way. I am happy I went with this cheaper option rather than those super spendy ones, because this works more than well enough for me.