Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Not very substantial

The cover fits like a glove, and if I planned to store my generator inside until it was needed, it would be perfect. However, for very practical reasons, the generator will be on my deck (bolted down, for sure) and exposed to Maine weather. The cover is very light - much lighter than an ordinary grill cover - and I worry that it will not stand up to the elements. Right now I'm contemplating whether I might need a cover to cover the cover.