Instruct: Classify Amazon reviews into positive or negative sentiment
Query: really useful for a 5 year old boy

I found this much better then any armbands, chest bands or any flotation device. This kept my kid up in the water while he was free to use his hands and legs as he liked. I stated with all 4 pads and then slowly removed one at a time and in less then 2 months, he became independent in the water