Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Too Small

I bought this for an older model Graco pack n' play we got from friends who no longer needed it. The mattress measures 27" x 39" and before washing it my husband and I tried it out to see if it fit. It's too small. I know it's supposed to be snug but the mattress won't even lay flat with this sheet on it. It seems like it'd be a great product, if only it were slightly bigger to fit properly.