we 1 yr old need add warmth beyond she onesie and winter sleeper as we winter have kick in and she room over the garage doesnt get the best heat . this blanket sleeper be just what we need . I do not have to worry about she be too cold at night . we do keep she foot in the little hole so when she be up in the morning she can stand up without issue . we put it on she right before we put she in she crib at night so no need to worry about it be large . she sleep longer now and more soundly because she cozy and warm . I like that it do not have arm and be breathable , no issue of be too warm . I highly recommend it !