"Unsure Purchase"
Reviews for this product weren't very good, but with one free I went ahead anyway. They are actually very useful. Easy to use, providing you don't over or under fill. Over fill and the zip won't hold or lets in air because it isn't flat, under fill and the air won't remove. Bit of a squeeze but just got a king size duvet in one and saved half a wardrobe. Would highly recommend these.