Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Cheap construction - disappointing

Although this product claims to hold dogs up to 20 pounds, I don't think a dog any bigger than 10 pounds could fit comfortably in this carrier. The bottom of the carrier is merely made of foam, so it does not give the dog a sturdy platform on which to rest. The straps feel pretty flimsy, and it seems that frequent use would cause them to fray easily. I was very disappointed with this product... and so was my 15 pound shih tzu.