My son plays with this tunnel all of the time!  We bought it for him when he was a year old and now he is two. At the moment it is setup going into a small tent, which he thinks is so much fun. My best tip for this tunnel is to put it away on occasion.  It is pretty big so when I notice he hasn't played with it for a little bit I pack it up.  When I bring it out a week or two later it's like he has a new toy.