Compatible with 5-point harnesses. When the baby was small, I used it with the foot area closed. Around 2-3 years old, I used it with their feet out. It can be used in various ways and was very useful. I used it for a few months in the winter for 3 years, but I haven't been using the stroller much lately, so I'm putting it up for sale. It has been washed. 8-11 Foot area 12-17 Head area Since there's nothing that completely attaches the footmuff to the stroller, I used clothespins to secure the head area and clip the sides. Please comment if you have any questions.