Pros: Great seal (when working) and food stays fresh.
Cons: Seal gets loose after a couple of years, no parts or service from Tilia.
I worked great in the beginning. I would buy large quanities of meat or other items from the local Sam's club. Then seal up and freeze/store the remaining purchased amounts. Great for camping. It has been two years and now I discovered the top seal came loose. I easily superglued it in place. Problem was, it didn't align up with the bottom perfectly. Thus no seal. I ended up using some 3/8" weather striping and placed it in the bottom indentation. Then the seal was back and I was back in business. Beats the 20% off the purchase of a new model they offered, which would have probably done the same thing in a couple of years. It only cost less than a dollar to repair. Their service leaves a little to be desired.