Instruct: Classify Amazon reviews into positive or negative sentiment
Query: MAJOR let down

I was quite satisfied after i initially filled the bags and sucked out the air..but within hours, air gets back inside the bags and you must re-vacuum them. This is the whole point of the product- keeping the air OUT so they stay compacted..Even after resealing and vacuuming multiple times, the air always gets back in- there is no permanent seal. DONT waste your money!