Instruct: Classify Amazon reviews into positive or negative sentiment
Query: portable and powerful

I love the Shark vac. I'm amazed by how much cat hair it picks up each time I use it. I can take it from room to room and I don't have to worry about cords. It makes an awful noise if it picks up something like a sock but I just turn it off and it pulls right out without getting all tangled up in the roller. It's great in the kitchen and bathroom. I sweep with my broom to get in tight spots and then use the sweeper to pick up the mess..no more dust pans! I even take the handle off and use it on my furniture to pick up hair and crumbs. It's great!