Instruct: Classify the given Amazon review into its appropriate rating category
Query: Rectangular spout sucks

I got it for my kid thinking that it would be great for him at daycare however it is useless and sitting in the cabinet for a while now. The worst part its spout. Thats the very important thing that manufacturer never thought of. The spout is in rectangular shape. When you sip something you dont make your lips rectangular to fit in that spout!!!! Naturally your lips curl to be round. Its so hard to sip through it even for me! How would my kid would sip from this rectangular spout!!!! Ugh. DO NOT BUY! ITS NOT COMFORTABLE AT ALL