Perfect for toddlers
I put my 2 year old in this harness, she is very slinder, & she was able to flip herself on the zip line & she wasn't coming out. She did not like it at first, no padding so a little uncomfortable but had so much fun that she forgot about that part. I highly recommend this for toddlers especially if the are slinder. There is plenty of adjustment so it will work for a few years easily.