I would go with about 7 or 8 years old depending on the child. My 5 year old will get in the kayak and we tie hers to mine and I tow her sometimes. She isn't strong enough or old enough to understand how to make the kayak go where she wants it to go yet. She usually sits between my legs on a cushion and helps me paddle. My 11 year old has her own kayak and does well, but does get tired if it's a long trip. We have had to tow her on several occasions because she grew tired on the return trip.