Instruct: Classify Amazon reviews into positive or negative sentiment
Query: tall black ugg boots

I have had Uggs before and loved them. The thing I love about Uggs is that I do not need to wear soxs. However, these black uggs are a big disappointment. The black dye comes off on my feet and it makes my feet look dirty. Not only that the dye doesnt come off easily even after scrubbing with a pumice stone. I threw the box out because I thought these uggs would be as great as the light brown. My sister and niece both have black uggs and they said there's never bled the black color onto their feet. Really disappointed if I had not thrown out the box I would've returned them.