Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not leakproof

Wilton's springform pan looks quite nice, and both my stepdad and I were fooled into thinking that it would perform just as nicely. Unfortunately, the batter started leaking through quite quickly. My stepdad was so convinced of this pan's superiority that he pointed out that maybe it's SUPPOSED to leak! Ugh. I think I'll stick to my old cheapie pan.