Instruct: Classify an Amazon review as either positive or negative.
Query: Winesaver review

This product is a great present to buy for yourself or for others. We gave away several as Christmas presents after using our own to "preserve" wine in bottles that were partially empty. Red wine in particular is degraded rapidly by exposure to oxygen. The vacuum system of the Tilia Winesaver rapidly removes most residual air. It is simple to use and does not require purchase of nitrogen in canisters or cans as other wine preservation systems do. If you like wine but don't always finish the bottle in one sitting, I would highly recommend this product.