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

I bought this to replace an old gel seat that I've had for about ten years and that was finally giving out on me. Right out of the packaging, this Schwinn seat looks like it would be very comfortable, but it's got a hard base underneath that makes it feel like I'm riding on a layer of wood.Also, the product description says that it is designed for "spin bikes" and doesn't say that it's made only for Schwinn spin bikes, so I thought it would be alright to use for my Phoenix spin bike. However, it keeps moving and shifting around when I use it, even when I pull the draw strings as tight as possible. This movements ends up causing some chafing on my inner thighs, which is certainly not a pleasant thing.I'll continue to use this since I can't return it since I've used it a few times, but I'm not that impressed with it and would suggest looking at another brand.