Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Untie your shoes when you take them off!

I have worn these shoes for about three months, and I can notice a difference in how my lower back feels. The shoes take a week or so to get used to, unless you wear hiking shoes a lot I imagine. I wear these around campus everyday, and out and about sometimes, and I have no major complaints about them, they feel comfortable and supportive. Additionally, they manage walking through water better than most shoes as far as getting soggy.The only bad thing I have realized is that when I took them off and put them on again without untying them, the material inside the top of the lip on the back of the heel became pushed down, and I cannot fix it without cutting the shell open, which I will not do. If you are the type to tie your shoes once and only once, I would look at Merrell's slip on line.