I wasn't sure how Loki would react to rollerblades. I was afraid it would freak him out & he would start barking at them. But luckily, he didn't. The blades didn't seem to phase him one bit.
Despite the misleading picture, he didn't really pull me too much. Mostly, he hung around on my side. He had lots of fun and seriously surprised me by how well-behaved he was. Great exercise for him without making me exert too much energy. I highly recommend it.