It looks very fragile, as if it would tear if a stray fingernail scratched it or you tried to fit a little too much. No problems so far with moderate handling, but I wouldn't recommend getting rough with it. All it takes is a pin hole leak to render it useless.Air is vacuumed out easily just by firmly pushing on it. Like the other reviews, I have found slowly sitting on it to be a better method than rolling the air out. The included Sure Zip lock helps to seal the bag easily, but it can be detached and get lost so take good care of it! There's only one seal but I would have preferred two for redundancy.My biggest gripe is it's lack of vertical height. Though the dimensions are just nice, you can't really fit a lot into each bag before the seams look practically bursting. And like I mentioned, I dare not test its limits.In conclusion, great value if it's on offer but don't expect it to last a lifetime!