Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Very comfortable & sturdy

Very comfortable and sturdy. This has allowed me to sit for long periods of time without being uncomfortable. The only draw back is, if you're looking for something to take to class or a meditation center this will not travel well on the subway/light rail/bike, etc...as it is a bit heavy. But if you need something for home use, I highly recommend this!