We got this product for my daughters first birthday and she was a little too young for it.  We did put her up and down the slide but she didn’t really show much reaction. She is 19 months now and loves it! She goes up and down the slide herself over and over.  She doesn’t exactly use the stairs side yet but she has noticed it.  Her cousins show her how to go underneath it but again it confuses her.  She loves this climber! Highly recommend! We put it up against our hockey table for extra support! Perfect price too!  It isn’t easy to put together but it is sturdy!