Both. Usually the non-retractable though. It gives way more control, and I don't feel like I have very good contact with Web when he's on the retractable lead. Also, I only use the retractable with his harness, as I don't want him to get used to the (slight) pressure on his collar that the retractable has. When I do use the retractable one, its when I'm to tired to be constantly watching and paying attention like I have to be when he's off-lead, and I don't feel like stopping every few feet so he can sniff and mark things.