Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great!

I was looking for a little boost of height so that I could more easily fit some storage bins under my bed. The only ones I could find in stores were 4 inches or more, which is much too high! I could hardly reach my bed. The 1 inch with the option to stack them and go 2 inches was the perfect solution. The clear is almost invisible to see, they have little walls that keep the bed wheels from rolling out, and I can finally slide everything under with ease! Very satisfied customer. PS. They came so fast!!