This was an immediate hit in our house.  We have 3 little girls... a 3 year old and one year old twins.  This tunnel is hours of fun.  I just leave it out in our play room all day and they laugh and scream and play in the tunnel throughout the day.  They laugh with each other play hide n seek and other games together.  It really helps teach sharing and taking turns.  The see through mess windows makes my girls laugh and laugh and laugh.  The material is very sturdy.  It has been put to the test by these three.  The padding on the rings is not super soft or cushion like, but it is fine.  This is a simple idea that keeps every entertained.  Love the color.  Easy to fold up and put away. Fits in Pacific Play tent but does not have an attachment where it stays securely.