Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Useless and unnecessary

Amazon said that customers who purchased the 8 foot beach umbrella also purchased this anchor. So we bought it too. It does not work with this umbrella. The umbrella did not fit into the opening of the anchor. In addition, the umbrella was well designed and easily anchored on its own. We used the umbrella for 5 days on the beach at Herring Cove Beach in Cape Cod and did not have any problems. So don't buy the anchor if you are purchasing the 8 foot umbrella.